[Blossom] Aquarium CO2 Carbon Dioxide Monitor Transparent Glass Drop Checker PH Indicator

Describe: 100 new and high quality. Material: glass. Color: transparent. Size: 40mm 60mm 70mm. Package includes: 1Pc Carbon Dioxide Monitor. Maintaining proper Carbon Dioxide CO2 levels in the planted aquarium is one of the most important factors in the health of the planted aquarium ecosystem. High quality material, stable and durable. Useful tool for monitoring CO2 levels in the aquarium. Makes it easy to figure out the CO2 level in an anqurium. Use with CO2 PH Indicator(not included), long term monitor Co2 the color show: Blue-insufficient Co2, Green-sufficient Co2, Yellow-excess Co2. Describe: 100 new and high quality. Material: glass. Color: transparent. Size: 40mm 60mm 70mm. Package includes: 1Pc Carbon Dioxide Monitor. Maintaining proper Carbon Dioxide CO2 levels in the planted aquarium is one of the most important factors in the health of the planted aquarium ecosystem. High quality material, stable and durable. Useful tool for monitoring CO2 levels in the aquarium. Makes it ea