{"title":"CO₂ Accessories","description":"\u003cp\u003ePractical CO₂ accessories for aquariums: pressure regulators, diffusers, bubble counters, check valves, tubing and other components for safe, precise CO₂ fertilization.\u003c\/p\u003e","products":[{"product_id":"aquanova-co-druckregler-gold-serie","title":"Aquanova CO₂ Pressure Regulator Gold Series","description":"\u003cp\u003e\u003cstrong\u003eAquaNova CO₂ Gold Series regulator – precise CO₂ dosing for planted aquariums\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe AquaNova Gold Series regulator was developed for aquarium CO₂ systems. It combines pressure reduction, fine adjustment and bubble monitoring in one compact unit.\u003c\/p\u003e\u003ch3\u003eEquipment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003ePressure gauge:\u003c\/strong\u003e monitors cylinder pressure\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003ePrecision valve:\u003c\/strong\u003e finely adjusts the CO₂ supply\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eMetal bubble counter:\u003c\/strong\u003e provides a visual indication of the gas flow\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eCheck valve:\u003c\/strong\u003e protects the system against backflow of water\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eQuick release on the bubble counter:\u003c\/strong\u003e makes topping up water easier\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eDesigned for aquarium CO₂ systems\u003c\/li\u003e\u003cli\u003eVery fine gas-flow adjustment\u003c\/li\u003e\u003cli\u003eRobust metal construction\u003c\/li\u003e\u003cli\u003eInstallation wrench included\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eCO₂ tubing, diffuser and other connection parts are sold separately.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eManufacturer information:\u003c\/strong\u003e\u003cbr\u003eEURONOVA POLSKA Sp. z o.o. z oo (owner of the AQUA NOVA brand)\u003cbr\u003e87-330 JABLONOWO-POMORSKIE\u003cbr\u003eKONOJADY 94B\u003cbr\u003ePoland\u003cbr\u003eTel.: +48 56 4980008\u003cbr\u003eFax: +48 56 64 00517\u003cbr\u003eContact: Tomasz Fiszer\u003cbr\u003eEmail: tf@aqua-nova.pl\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"Default Title","offer_id":52602118537543,"sku":null,"price":49.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/01-133771.jpg?v=1792941829"},{"product_id":"aquanova-co-druckregler-gold-serie-mit-magnetventil-nachtabschaltung","title":"Aquanova CO₂ pressure regulator Gold series with solenoid valve (night shut-off)","description":"\u003cp\u003e\u003cstrong\u003eAquaNova CO₂ Gold Series regulator with solenoid valve – automatic nighttime shut-off\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis version of the AquaNova Gold Series regulator combines precise CO₂ control with an integrated solenoid valve. CO₂ supply can be switched on and off automatically using a timer or compatible pH controller.\u003c\/p\u003e\u003ch3\u003eEquipment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003ePressure gauge:\u003c\/strong\u003e monitors cylinder pressure\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003ePrecision valve:\u003c\/strong\u003e finely adjusts CO₂ dosing\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eMetal bubble counter:\u003c\/strong\u003e visual check of the gas flow\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eCheck valve:\u003c\/strong\u003e protects against water backflow\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eSolenoid valve:\u003c\/strong\u003e interrupts CO₂ supply automatically when electrical power is cut\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eBenefits of the solenoid valve\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eAutomatic nighttime shut-off using a timer\u003c\/li\u003e\u003cli\u003eCan be controlled by a suitable pH controller\u003c\/li\u003e\u003cli\u003eHelps reduce unnecessary CO₂ consumption\u003c\/li\u003e\u003cli\u003eCloses automatically in a power failure\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eIncluded\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eCO₂ Gold Series regulator\u003c\/li\u003e\u003cli\u003eIntegrated solenoid valve\u003c\/li\u003e\u003cli\u003eBubble counter and check valve\u003c\/li\u003e\u003cli\u003eInstallation wrench\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eManufacturer information:\u003c\/strong\u003e\u003cbr\u003eEURONOVA POLSKA Sp. z o.o. z oo (owner of the AQUA NOVA brand)\u003cbr\u003e87-330 JABLONOWO-POMORSKIE\u003cbr\u003eKONOJADY 94B\u003cbr\u003ePoland\u003cbr\u003eTel.: +48 56 4980008\u003cbr\u003eFax: +48 56 64 00517\u003cbr\u003eContact: Tomasz Fiszer\u003cbr\u003eEmail: tf@aqua-nova.pl\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"Default Title","offer_id":52602177585479,"sku":null,"price":69.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/01-133762.jpg?v=1792940632"},{"product_id":"aquanova-co-blasenzahler-aus-metall-gold-serie","title":"Aquanova CO₂ Metal Bubble Counter, Gold Series","description":"\u003cp data-start=\"258\" data-end=\"534\"\u003e\u003cbr\u003e \u003cstrong\u003eAquanova CO₂ Metal Bubble Counter\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e Robust, precise bubble counter for fine CO₂ dosing in planted aquariums. The metal housing ensures durability and a secure hold, while the transparent chamber allows for accurate reading of the bubble count.\u003cbr\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli data-end=\"362\" data-start=\"269\"\u003e\n\n \u003cstrong data-end=\"295\" data-start=\"269\"\u003eSturdy metal housing\u003c\/strong\u003e – resistant, durable and insensitive to microcracks\u003c\/li\u003e\n\n\u003cli data-end=\"458\" data-start=\"365\"\u003e\n\n \u003cstrong data-end=\"396\" data-start=\"365\"\u003eClearly readable scale\/chamber\u003c\/strong\u003e – uniform, easily visible bubbles for precise adjustment\u003c\/li\u003e\n\n\u003cli data-end=\"552\" data-start=\"461\"\u003e\n\n \u003cstrong data-end=\"496\" data-start=\"461\"\u003eSecure hose fittings\u003c\/strong\u003e – for 4\/6 mm CO₂ tubing, high hold without slipping\u003c\/li\u003e\n\n\u003cli data-end=\"654\" data-start=\"555\"\u003e \n\u003cstrong data-end=\"576\" data-start=\"555\"\u003eEasy to maintain\u003c\/strong\u003e – can be disassembled for cleaning and refilling without tools\/in just a few steps\u003c\/li\u003e\n\n\u003cli data-end=\"739\" data-start=\"657\"\u003e\n\n \u003cstrong data-end=\"677\" data-start=\"657\"\u003eCompact design\u003c\/strong\u003e – fits discreetly in a base cabinet or at the filter outlet \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-end=\"1015\" data-start=\"951\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp data-end=\"1015\" data-start=\"951\"\u003e \u003cstrong\u003eIncluded in delivery:\u003c\/strong\u003e AquaNova CO₂ bubble counter made of metal\u003c\/p\u003e\n\n\u003cp data-end=\"1015\" data-start=\"951\"\u003e\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"Default Title","offer_id":52602464043335,"sku":null,"price":7.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/newcounterxrizukqpwvh5p.jpg?v=1761135535"},{"product_id":"aquanova-co-blasenzahler-aus-glas","title":"Aquanova CO₂ Glass Bubble Counter","description":"\u003cp data-end=\"534\" data-start=\"258\"\u003e\u003cbr\u003e \u003cstrong\u003eAquanova CO₂ Glass Bubble Counter\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e The \u003cstrong data-start=\"121\" data-end=\"155\"\u003eAquaNova glass bubble counter\u003c\/strong\u003e displays the number of bubbles clearly and quietly – ideal for fine-tuning your CO₂ supply.\u003cbr\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli data-start=\"260\" data-end=\"346\"\u003e\n\n \u003cstrong data-start=\"260\" data-end=\"287\"\u003eCrystal-clear reading:\u003c\/strong\u003e Smooth bubble flow for precise bubble count adjustment.\u003c\/li\u003e\n\n\u003cli data-start=\"349\" data-end=\"437\"\u003e\n\n \u003cstrong data-start=\"349\" data-end=\"370\"\u003eElegant glass design:\u003c\/strong\u003e Discreet in the tank or on the edge – a perfect match for aquascapes.\u003c\/li\u003e\n\n\u003cli data-start=\"440\" data-end=\"508\"\u003e\n\n \u003cstrong data-start=\"440\" data-end=\"467\"\u003eCO₂-safe \u0026amp; durable:\u003c\/strong\u003e Made from robust borosilicate glass\u003c\/li\u003e\n\n\u003cli data-start=\"511\" data-end=\"583\"\u003e \n\u003cstrong data-start=\"511\" data-end=\"532\"\u003eEasy installation:\u003c\/strong\u003e For 4\/6 mm CO₂ tubing; can be installed vertically.\u003c\/li\u003e\n\n\u003cli data-start=\"586\" data-end=\"661\"\u003e\n\n \u003cstrong data-start=\"586\" data-end=\"609\"\u003eEasy to maintain:\u003c\/strong\u003e Quick to clean, easy to descale if necessary.\u003cbr\u003e\u003cbr\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-start=\"951\" data-end=\"1015\"\u003e \u003cstrong\u003eIncluded in delivery:\u003c\/strong\u003e AquaNova CO₂ bubble counter made of glass\u003c\/p\u003e\n\n\u003cp data-start=\"951\" data-end=\"1015\"\u003e\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"Default Title","offer_id":52602510606663,"sku":null,"price":4.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/Kopie_von_Kopie_von_Mini_Wasserfall_5_4c39ee69-611f-49e2-bcfc-a6aec474d5d2.png?v=1761135831"},{"product_id":"aquanova-ruckschlagventil","title":"Aquanova check valve 4\/6mm","description":"\u003cp data-end=\"534\" data-start=\"258\"\u003e\u003cbr\u003e \u003cstrong\u003eAquanova check valve\u003cbr\u003e\u003c\/strong\u003e for standard 4\/6mm hoses\u003cbr\u003e\u003cbr\u003e Reliably protects pressure reducers, solenoid valves, bubble counters, and air diaphragm pumps from backflowing aquarium water.\u003cbr\u003e\u003cbr\u003e The \u003cstrong data-start=\"170\" data-end=\"199\"\u003eAquaNova check valve\u003c\/strong\u003e allows gas to flow in only \u003cstrong data-start=\"217\" data-end=\"234\"\u003eone direction\u003c\/strong\u003e – ideal for CO₂ systems and air pumps in planted aquariums.\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp data-start=\"951\" data-end=\"1015\"\u003e \u003cstrong\u003eScope of delivery:\u003c\/strong\u003e Aquanova check valve 4\/6mm\u003c\/p\u003e\n\n\u003cp data-start=\"951\" data-end=\"1015\"\u003e\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"Default Title","offer_id":52602607206727,"sku":null,"price":0.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/KopievonKopievonMiniWasserfall_6.png?v=1761137237"},{"product_id":"aquanova-co-diffusor-aus-edelstahl","title":"Aquanova CO₂ Diffuser made of stainless steel, Hang On 27cm","description":"\u003cp data-end=\"534\" data-start=\"258\"\u003e\u003cbr\u003e Aquanova CO₂ Diffuser made of stainless steel, Hang On 27cm\u003cbr\u003e\u003cbr\u003e Elegant stainless steel hang-on diffuser for fine CO₂ atomization and an unobtrusive look in the pool.\u003c\/p\u003e\n\n\u003cp data-end=\"534\" data-start=\"258\"\u003e The \u003cstrong data-start=\"154\" data-end=\"194\"\u003ereplaceable ceramic membrane disc\u003c\/strong\u003e produces very fine bubbles; the \u003cstrong data-start=\"228\" data-end=\"257\"\u003eoverall length of approximately 27 cm\u003c\/strong\u003e makes it ideal for taller aquariums.\u003c\/p\u003e\n\n \u003cp data-end=\"534\" data-start=\"258\"\u003eConnection for \u003cstrong data-start=\"309\" data-end=\"332\"\u003e4\/6-mm CO₂ tubing\u003c\/strong\u003e .\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp data-start=\"951\" data-end=\"1015\"\u003e\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"Stainless steel diffuser","offer_id":52604222308679,"sku":null,"price":22.9,"currency_code":"EUR","in_stock":true},{"title":"Replacement disc \/ membrane","offer_id":52604222341447,"sku":null,"price":5.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/KopievonKopievonMiniWasserfall_16.png?v=1761150885"},{"product_id":"aquanova-co-diffusor-aus-glas","title":"Aquanova CO₂ Glass Diffuser","description":"\u003cp data-end=\"534\" data-start=\"258\"\u003e\u003cbr\u003e Aquanova CO₂ Glass Diffuser\u003cbr\u003e Available in common sizes (e.g. \u003cstrong data-start=\"323\" data-end=\"332\"\u003e20 mm\u003c\/strong\u003e , \u003cstrong data-start=\"334\" data-end=\"343\"\u003e28 mm\u003c\/strong\u003e , \u003cstrong data-start=\"345\" data-end=\"354\"\u003e50 mm\u003c\/strong\u003e “Japanese style”)\u003cbr\u003e\u003cbr\u003e Discreet CO₂ injection with fine microbubble dispersal:\u003cbr\u003e The \u003cstrong data-start=\"103\" data-end=\"129\"\u003eAquaNova glass diffuser\u003c\/strong\u003e is made of high-quality laboratory glass and uses a \u003cstrong data-start=\"180\" data-end=\"209\"\u003eceramic membrane disc\u003c\/strong\u003e for efficient diffusion.\u003cbr\u003e\u003cbr\u003e Includes \u003cstrong data-start=\"247\" data-end=\"259\"\u003esuction cup\u003c\/strong\u003e for secure attachment.\u003c\/p\u003e\n\n\u003cp data-end=\"534\" data-start=\"258\"\u003e Connection for \u003cstrong data-start=\"309\" data-end=\"332\"\u003e4\/6-mm CO₂ tubing\u003c\/strong\u003e .\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp data-start=\"951\" data-end=\"1015\"\u003e\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"20mm","offer_id":52604231418183,"sku":null,"price":5.9,"currency_code":"EUR","in_stock":true},{"title":"28mm","offer_id":52604350234951,"sku":null,"price":5.9,"currency_code":"EUR","in_stock":true},{"title":"50mm","offer_id":52604350267719,"sku":null,"price":13.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/KopievonKopievonMiniWasserfall_19.png?v=1761151362"},{"product_id":"aquanova-co-flasche-mehrweg-2-liter","title":"Aquanova CO₂ reusable bottle, 2 liters","description":"\u003cp data-end=\"534\" data-start=\"258\"\u003e\u003cbr\u003e Aquanova CO₂ reusable bottle, 2 liters\u003cbr\u003e \u003cbr\u003eRobust, \u003cstrong data-end=\"99\" data-start=\"59\"\u003erefillable 2-liter CO₂ bottle\u003c\/strong\u003e for the reliable supply of planted aquariums.\u003cbr\u003e\u003cbr\u003e Contents: 2 liters, Max. 1500g\u003cbr\u003e Operating pressure: 150 BAR\u003cbr\u003e Height including handle: 41.5cm\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp data-end=\"534\" data-start=\"258\"\u003e Made in Europe, with \u003cstrong data-end=\"205\" data-start=\"179\"\u003e10-year TÜV certification\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp data-end=\"534\" data-start=\"258\"\u003e\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"Default Title","offer_id":52604386738503,"sku":null,"price":84.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/2L3D_1920x1920_669f2544-56b4-435a-987a-c89cb4a6aab0.jpg?v=1761151744"},{"product_id":"aquanova-co-flasche-mehrweg-5-liter","title":"Aquanova CO₂ reusable bottle, 5 liters","description":"\u003cp data-start=\"258\" data-end=\"534\"\u003e\u003cbr\u003e Aquanova CO₂ reusable bottle, 5 liters\u003cbr\u003e\u003cbr\u003e Robust, \u003cstrong data-start=\"59\" data-end=\"99\"\u003erefillable 5-liter CO₂ bottle\u003c\/strong\u003e for the reliable supply of planted aquariums.\u003cbr\u003e\u003cbr\u003e Contents: 2 liters, Max. 3000g\u003cbr\u003e Operating pressure: 150 BAR\u003cbr\u003e Height including handle: 54.5cm\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp data-start=\"258\" data-end=\"534\"\u003e Made in Europe, with \u003cstrong data-start=\"179\" data-end=\"205\"\u003e10-year TÜV certification\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp data-start=\"258\" data-end=\"534\"\u003e\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"Default Title","offer_id":52604422455623,"sku":null,"price":109.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/5L_3D_1920x1920_14c12119-0b93-4313-8a6b-0f31e1847c2d.jpg?v=1761152146"},{"product_id":"aquanova-co-flasche-mehrweg-8-liter","title":"Aquanova CO₂ reusable bottle, 8 liters","description":"\u003cp data-end=\"534\" data-start=\"258\"\u003e\u003cbr\u003e Aquanova CO₂ reusable bottle, 8 liters\u003cbr\u003e\u003cbr\u003e Robust, \u003cstrong data-end=\"99\" data-start=\"59\"\u003erefillable 8-liter CO₂ bottle\u003c\/strong\u003e for the reliable supply of planted aquariums.\u003cbr\u003e\u003cbr\u003e Contents: 8 liters, Max. 4,800g\u003cbr\u003e Operating pressure: 150 BAR \u003cbr\u003eHeight including handle: 77cm\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp data-end=\"534\" data-start=\"258\"\u003e Made in Europe, with \u003cstrong data-end=\"205\" data-start=\"179\"\u003e10-year TÜV certification\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp data-end=\"534\" data-start=\"258\"\u003e\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"Default Title","offer_id":52604446867783,"sku":null,"price":129.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/8L3D_1920x1920_262a8f5f-bd7e-4508-b9cb-c67f0209fad2.jpg?v=1761152260"},{"product_id":"aquanova-co-test-indikatorflussigkeit","title":"Aquanova CO₂ Test Indicator Fluid","description":"\u003cp data-end=\"534\" data-start=\"258\"\u003e\u003cbr\u003e \u003cstrong\u003eAquanova CO₂ Test Indicator Fluid\u003cbr\u003e\u003c\/strong\u003e\u003cbr\u003e Refill fluid for CO₂ glass \u003ca href=\"https:\/\/terboven-aquaristik-shop.live\/products\/aquanova-co-glasindikator-drop-checker\"\u003edrop checkers\u003c\/a\u003e .\u003cbr\u003e\u003cbr\u003e Reliably indicates the CO₂ level in the aquarium via color change: \u003cstrong data-start=\"249\" data-end=\"268\"\u003eBlue = too little\u003c\/strong\u003e , \u003cstrong data-start=\"270\" data-end=\"300\"\u003eGreen = optimal (≈ 30 mg\/l)\u003c\/strong\u003e , \u003cstrong data-start=\"302\" data-end=\"320\"\u003eYellow = too high\u003c\/strong\u003e .\u003cbr\u003e\u003cbr\u003e For application, \u003cstrong data-start=\"347\" data-end=\"361\"\u003e15 drops\u003c\/strong\u003e are placed in the glass indicator.\u003cbr\u003e The display is permanent with a slight delay.\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp data-end=\"534\" data-start=\"258\"\u003e\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"Default Title","offer_id":52604590489927,"sku":null,"price":4.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/Kopie_von_Kopie_von_Mini_Wasserfall_20.png?v=1761153024"},{"product_id":"aquanova-co-glasindikator-drop-checker","title":"Aquanova CO₂ glass indicator (Drop Checker)","description":"\u003cp data-start=\"258\" data-end=\"534\"\u003e\u003cbr\u003e \u003cstrong\u003eAquanova CO₂ glass indicator (Drop Checker)\u003cbr\u003e\u003c\/strong\u003e \u003cbr\u003eThe AquaNova CO₂ glass indicator is used to monitor the CO₂ concentration in the aquarium.\u003c\/p\u003e\n\n\u003cp data-start=\"258\" data-end=\"534\"\u003e When used with AquaNova \u003ca href=\"https:\/\/terboven-aquaristik-shop.live\/products\/aquanova-co-test-indikatorflussigkeit\"\u003eindicator fluid,\u003c\/a\u003e the water changes color. This allows you to determine whether the CO₂ level is too high, too low, or optimally adjusted. Other testing methods only offer a single measurement – ​​with the glass indicator, you can perform continuous monitoring.\u003c\/p\u003e\n\n\u003cp data-start=\"258\" data-end=\"534\"\u003e The CO₂ indicator is made of very high-quality glass and is suitable for any aquarium.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"Default Title","offer_id":52604649800007,"sku":null,"price":5.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/KopievonKopievonMiniWasserfall_21.png?v=1761153628"},{"product_id":"aquanova-co-glasbogen","title":"Aquanova CO₂ Glass Arch","description":"\u003cp data-start=\"258\" data-end=\"534\"\u003e\u003cbr\u003e \u003cstrong\u003eAquanova CO₂ Glass Arch\u003cbr\u003e\u003c\/strong\u003e\u003cbr\u003e \u003cspan id=\"wpaicg-chat-message-45099\"\u003eThe AquaNova CO₂ glass arc is a useful accessory for CO₂ systems in aquariums. It ensures that the CO₂ tubing is routed neatly and without kinks over the edge of the tank, and that the\u003c\/span\u003e CO₂ supply is distributed evenly and finely in the water.\u003cbr\u003e\u003c\/p\u003e\n\n \u003cp data-start=\"258\" data-end=\"534\"\u003e\u003cstrong\u003eAvailable variants:\u003c\/strong\u003e\u003cbr\u003e • Glass arches 4x10mm\u003cbr\u003e • Glass arches 4x15mm\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp data-start=\"258\" data-end=\"534\"\u003e\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"4x10mm","offer_id":52604706226503,"sku":null,"price":2.9,"currency_code":"EUR","in_stock":true},{"title":"4x15mm","offer_id":52604706259271,"sku":null,"price":2.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/KopievonKopievonMiniWasserfall_22.png?v=1761154127"},{"product_id":"aquanova-co-edelstahlbogen","title":"Aquanova CO₂ stainless steel bow","description":"\u003cp data-start=\"258\" data-end=\"534\"\u003e\u003cbr\u003e \u003cstrong\u003eAquanova CO₂ stainless steel bow\u003cbr\u003e\u003c\/strong\u003e\u003cbr\u003e \u003cspan id=\"wpaicg-chat-message-45099\"\u003eThe AquaNova stainless steel CO₂ elbow is a useful accessory for CO₂ systems in aquariums. 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Suitable for \u003cstrong data-start=\"359\" data-end=\"391\"\u003esmall to medium-sized aquariums\u003c\/strong\u003e .\u003cbr\u003e\u003cbr\u003e For hose connections of 12\/16mm and 16\/21mm (filter) as well as 4\/6mm CO2.\u003cbr\u003e The overall size of the diffuser is 12x4cm.\u003c\/p\u003e\n\n\u003cp data-end=\"534\" data-start=\"258\"\u003e\u003c\/p\u003e","brand":"Aquanova","offers":[{"title":"Inline diffuser","offer_id":52604725133639,"sku":null,"price":17.9,"currency_code":"EUR","in_stock":true},{"title":"Replacement disc \/ membrane","offer_id":52604725166407,"sku":null,"price":4.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/KopievonKopievonMiniWasserfall_24.png?v=1761155503"},{"product_id":"co2-druckschlauch-4-6mm-schwarz-meterware","title":"CO2 pressure hose 4\/6mm black, sold by the meter","description":"\u003cp\u003e\u003cbr\u003e CO2 pressure hose 4\/6mm\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e black\u003c\/li\u003e\n\n\u003cli\u003e max: 13 bar \/ 20°C.\u003c\/li\u003e\n\n\u003cli\u003e Operating range: -10°C to 40°C.\u003cbr\u003e\u003cbr\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003cstrong\u003eSold by the meter.\u003c\/strong\u003e Please select the length in meters via the quantity field.\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e","brand":"Aqualight","offers":[{"title":"Default Title","offer_id":52614723928391,"sku":null,"price":1.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3588\/8199\/files\/Erllenzapfen_5.png?v=1761289824"},{"product_id":"aqualight-ph-controller-ph-201-mit-elektrode","title":"Aqualight pH Controller PH-201 with electrode","description":"\u003cp\u003e\u003cbr\u003e Aqualight pH Controller PH-201 with electrode\u003cbr\u003e\u003cbr\u003e The PH-201 continuously measures and controls your pH-dependent devices – ideal for \u003cstrong\u003eCO₂ solenoid valve control\u003c\/strong\u003e in freshwater or saltwater aquariums.\u003cbr\u003e\u003cbr\u003e The switchable control direction (HI\/LO) allows you to lower the pH (e.g., CO₂ addition) or raise it (e.g., limewater).\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eTwo-point calibration\u003c\/strong\u003e (pH 7 and pH 4\/9) ensures reliable values.\u003cbr\u003e \u003cbr\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e \n\u003cstrong\u003eMeasuring range:\u003c\/strong\u003e 0.00–14.00 pH · \u003cstrong\u003eAdjustment range:\u003c\/strong\u003e 3.50–10.50 pH · \u003cstrong\u003eResolution:\u003c\/strong\u003e 0.01 pH · \u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±0.1 pH. \n\n\u003c\/li\u003e\n\n\u003cli\u003e \n\u003cstrong\u003eControl direction switchable\u003c\/strong\u003e (HI-A \/ LO-A) for pH reduction or increase; \u003cstrong\u003erelay socket 5 A\/240 V\u003c\/strong\u003e switches the connected device (e.g. solenoid valve).\u003c\/li\u003e\n\n\u003cli\u003e \n\u003cstrong\u003eCalibration:\u003c\/strong\u003e pH 7 (CAL) + pH 4\/9 (SLOPE) – quick and precise results. \n\n\u003c\/li\u003e\n\n\u003cli\u003e \n\u003cstrong\u003eLED display (4-digit)\u003c\/strong\u003e , \u003cstrong\u003e230 V \/ 50 Hz\u003c\/strong\u003e , only \u003cstrong\u003e2 W\u003c\/strong\u003e power consumption. 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