UUIDEAR co2 drop checker solution was the most sensitive in market. The color change speed was the most important thing to check if the solution was good or not. The co2 drop checker solution color could tell you that if your planted tank co2 level was normal, too much, or too low.
Blue color= Too low co2
Green color= Normal co2
Yellow color= Too much co2
Cooperate with us, you could get the OEM service: the packaging box, sticker, bottle volume etc. Original manufacturer from China. Big quantity could get the competitive price in market. Feel free to contact [email protected]