Keeping an aquarium is both an art and a science. Designing an aquascape and making sure it has all the elements it needs to stay alive and thriving is no easy task. One of the things owners have to look out for is to keep a right amount of CO2 in their tanks. CO2 or carbon dioxide is essential to a tank, it keeps plants happy and producing oxygen that's beneficial to your fishes.

One way to know if your aquarium has the right levels of CO2 is to test them with the Rhinox Glass Drop Checker. Made from high quality glass that's easy to see even in a busy tank, this comprehensive drop checker kit has everything you need to test for a healthy level of CO2.

Every kit comes with 1 glass drop checker, 1 suction cup, 1 10ml CO2 indicator solution, 1 2ml syringe and 1 colour chart. Simply add 5 drops of CO2 indicator into the glass checker and make sure it is stored in the bulbous side of the valve with the opening facing down. Attach this to the side of your tank with the suction cup, completely submerged in the tank water and wait for up to 2 hours. If the blue CO2 indicator turns green, that's the right balance of CO2. If it turns yellow, your tank has excessive CO2. Make the necessary adjustments, empty your glass valve and repeat the test until you get green. A healthy tank has a carbon dioxide to water level that contains anywhere between 20 to 40 ppm (parts per million). 30 ppm is the optimal level that is healthy for both plants and fish.

So the next time you are worried about your plants and fishes having too much or too little carbon dioxide in the tank, keep your hobby worry-free and enjoy your time as an aquarium owner with this easy-to-use Rhinox Glass Drop Checker Kit.

• HIGH-QUALITY, MUST-HAVE KIT - - - The Rhinox Glass Drop Checker is every aquarium/planted tank's essential tool. Keep the CO2 levels in your tank consistent by checking it regularly. This complete kit contains 1 glass drop checker, 1 suction cup, 1 10ml CO2 indicator solution, 1 2ml syringe and 1 colour chart. Please note: This kit does not come with the dKH Solution.
• EASY TO USE - - - Make sure your test kit is clean. Drop 5 drops of CO2 indicator into the glass checker and make sure it is stored in the bulbous side of the valve with the opening facing down. Attach this to the side of your tank, completely submerged in the tank water and wait for up to 2 hours.
• COLOUR CHANGE SHOWS RESULTS - - - Follow the color chart carefully. The CO2 indicator is blue in colour. When it turns green, that's the right balance of CO2. If it turns yellow, your tank has too much CO2. Make the necessary adjustments and test until you get green.
• BENEFICIAL LEVEL OF CARBON DIOXIDE - - - A healthy tank has a carbon dioxide to water level that contains anywhere between 20 to 40 ppm (parts per million). 30 ppm is the optimal level that is healthy for both plants and fish. Keep CO2 levels optimum for all your aquatic plants to grow lush and beautiful.