{"product_id":"castle-dawn-aquatics-aquarium-co2-regulator-with-double-gauge-bubble-counter-w21-8-valve","title":"Aquarium CO2 Regulator with Double Gauge \u0026 Bubble Counter – W21.8 Valve","description":"\u003cp data-end=\"671\" data-start=\"307\"\u003eKeep your planted aquarium running efficiently with the Castle Dawn Aquatics Double-Meter CO2 Regulator, complete with a magnetic solenoid and integrated bubble counter. The dual gauge display enables you to easily monitor both tank pressure and output pressure at a glance, while the fine-tune needle valve ensures stable and precise CO2 delivery. Built with high-quality, pressure-resistant materials and a leak-proof design, this tank is ideal for serious aquascapers and planted tank enthusiasts.\u003c\/p\u003e\n\u003cp data-end=\"895\" data-start=\"673\"\u003e⚠️ \u003cstrong data-end=\"688\" data-start=\"676\"\u003eWarning:\u003c\/strong\u003e Cheap CO2 regulators sold on large online marketplaces may not meet safety standards. Poorly manufactured units can pose serious risks.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eKey Features and Important Notes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"914\" data-start=\"782\"\u003e\n\u003cstrong data-end=\"802\" data-start=\"782\"\u003eWhat’s Included:\u003c\/strong\u003e\u003cbr data-end=\"805\" data-start=\"802\"\u003e– 1 × CO2 Regulator (Double Gauge)\u003cbr data-end=\"842\" data-start=\"839\"\u003e– 1 × Built-in Bubble Counter\u003cbr data-end=\"874\" data-start=\"871\"\u003e⚠️ CO2 tubing and canister not included.\u003c\/li\u003e\n\u003cli data-end=\"1035\" data-start=\"916\"\u003e\n\u003cstrong data-end=\"941\" data-start=\"916\"\u003eDouble Gauge Display:\u003c\/strong\u003e\u003cbr data-end=\"944\" data-start=\"941\"\u003eView tank pressure and output pressure – instantly detect low gas or unsafe levels.\u003c\/li\u003e\n\u003cli data-end=\"1160\" data-start=\"1037\"\u003e\n\u003cstrong data-end=\"1065\" data-start=\"1037\"\u003eBuilt-in Solenoid Valve:\u003c\/strong\u003e\u003cbr data-end=\"1068\" data-start=\"1065\"\u003eA magnetically operated solenoid valve allows automated on\/off control when used with a timer.\u003c\/li\u003e\n\u003cli data-end=\"1263\" data-start=\"1162\"\u003e\n\u003cstrong data-end=\"1195\" data-start=\"1162\"\u003eFine Adjustment Needle Valve:\u003c\/strong\u003e\u003cbr data-end=\"1198\" data-start=\"1195\"\u003ePrecisely control CO2 output for stable and consistent injection.\u003c\/li\u003e\n\u003cli data-end=\"1403\" data-start=\"1265\"\u003e\n\u003cstrong data-end=\"1295\" data-start=\"1265\"\u003eHigh-Quality Construction:\u003c\/strong\u003e\u003cbr data-end=\"1298\" data-start=\"1295\"\u003eCrafted from pressure-resistant materials, these regulators have a longer life and superior durability over standard regulators.\u003c\/li\u003e\n\u003cli data-end=\"1512\" data-start=\"1405\"\u003e\n\u003cstrong data-end=\"1430\" data-start=\"1405\"\u003eAnti-Backflow Design:\u003c\/strong\u003e\u003cbr data-end=\"1433\" data-start=\"1430\"\u003eAn acrylic check valve prevents water from flowing back into the regulator system.\u003c\/li\u003e\n\u003cli data-end=\"1583\" data-start=\"1514\"\u003e\n\u003cstrong data-end=\"1523\" data-start=\"1514\"\u003eSize:\u003c\/strong\u003e\u003cbr data-end=\"1526\" data-start=\"1523\"\u003eStandard W21.8 thread (fits most UK and EU CO2 canisters)\u003c\/li\u003e\n\u003cli data-end=\"1630\" data-start=\"1585\"\u003e\n\u003cstrong data-end=\"1598\" data-start=\"1585\"\u003eWarranty:\u003c\/strong\u003e\u003cbr data-end=\"1601\" data-start=\"1598\"\u003e1‑Year Warranty (\u003cstrong\u003e\u003ca title=\"WARRANTY TERMS AND CONDITIONS - Castle Dawn Aquatics\" href=\"https:\/\/www.castledawnaquatics.com\/pages\/warranty-terms-conditions\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003eT\u0026amp;Cs apply\u003c\/span\u003e\u003c\/a\u003e\u003c\/strong\u003e).\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castle Dawn Aquatics","offers":[{"title":"UK","offer_id":51082928324889,"sku":"000028L-1","price":39.99,"currency_code":"USD","in_stock":false},{"title":"US","offer_id":51082928357657,"sku":"000028L-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":51082928390425,"sku":"000028L-3","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Other ( Please Leave a message)","offer_id":51082928423193,"sku":"000028L-4","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0036\/7679\/9046\/files\/Aquarium_CO2_Regulator_with_Double_Gauge_Bubble_Counter_W21.8_Valve_K-_1.jpg?v=1758455288","url":"https:\/\/www.castledawnaquatics.com\/products\/castle-dawn-aquatics-aquarium-co2-regulator-with-double-gauge-bubble-counter-w21-8-valve","provider":"Castle Dawn Aquatics","version":"1.0","type":"link"}