Fish Tank CO2 Diffuser Glass Drop Checker PH Long Term Indicator Monitor Tester

$11.19 $15.99

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  • Estimated Delivery:Apr 04 - Apr 11

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This is the simplest and most direct way. When the solution is blue, you need more CO2. If the color is yellow, the CO2 is excessive, if the color is green, the amount of CO2 is suitable! The drop checker with a suction cup, it can adsorb on the fish tank firmly and not easy to fall.

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