I need some help.

[Geeray]

If you're looking for $50 paper weight buy a Hana phosphate checker. Like most others have said I'm guessing stability is your issue. This is just me talking but I would recommend you go to the battle corals website and read Adams recent blogs about nutrients.

 

[Tahoe61]

^ Yup I agree do not waste your money on a hanna phosphate checker, completely different game when you buy an alkalinity hanna though, definitely worth every penny.

 

[Geeray]

Does the alk checker use liquid reagents?

 

[Tahoe61]

Yes you have to buy the reagent as well, only one though. The steps are easy not like the calcium or phos checkers.