Co2 Drop Checker

I bought a 2nd hand CO2 Drop Checker from a AQ bro..hehe lets see my new toy

co2 regent

4dkh water suppose to be used rather than tank water..4dkh water will produce more accurate result

I bought co2 indicator liquid from GC 1 week before, still have not use it yet...haha too kiasu

hehe completed the set up... the liquid is blue initially, but after around 30-40 mins, it turns green, showing sufficient co2 in water. I heard its best to achieve yellow colour(more than sufficient co2), but i ''Sayang" my fish and shrimps... balance is more important to me.