{"product_id":"co2-drop-checker","title":"CO2 Drop Checker","description":"\u003cp style=\"text-align: center;\"\u003eA CO₂ Drop Checker is an essential monitoring tool for any planted aquarium running CO₂ injection. It provides a continuous, real-time visual indication of dissolved CO₂ levels in your tank via a color-changing liquid, green indicates optimal CO₂, blue indicates too little, and yellow indicates dangerously high levels that could harm fish.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eThe drop checker is filled with 4dKH reference solution and a pH indicator dye, and hung inside the aquarium where it equilibrates with the surrounding water. Unlike electronic CO₂ monitors, drop checkers require no batteries or calibration and provide a reliable, low-maintenance reading at all times. An indispensable tool for dialing in CO₂ to the optimal range for plant growth and fish safety.\u003c\/p\u003e","brand":"The Aquatic Garage","offers":[{"title":"Default Title","offer_id":49694625628383,"sku":null,"price":12.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/8515\/5039\/files\/co2-wide-2.png?v=1788570575","url":"https:\/\/theaquaticgarage.com\/products\/co2-drop-checker","provider":"The Aquatic Garage","version":"1.0","type":"link"}