Ulns

[Chase31]

Okay so haven't been arround in a while my tank has been doing good but mostly fish and a few algae issues, I have a Hanna ultra low range checker and in ppb my phosphate is 76 and I believe that's pretty high. I would like to try an ulns. Zeo seams like A lot of work and to me people have said prodibio doesn't work. So what do you guys suggest?


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