Hanna po4 marine fresh meter

[jesse alex ethier]

So I got a reading of 0 but i have turf and algae growing i see they have a 0.05 accurate difference so should I just take that my p04 is higher and side note my sod are losing color. And I'm not running gfo

 

[afboundguy]

More than likely the algae is consuming all the phosphates in the tank giving you a false reading. If you have an algae problem with no testable phosphates that's my guess...