Randy Holmes-Farley
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maybe but i am hopeful it was just that 1 rock that was only in like 1 or 2 weeks on another note my phosphate is from 0.6 to 0.21 in 24 hours i love phosguard and would recommend it to any 1
lol
I don't love it, but it does work to reduce phosphate. So do other methods, such as GFO and lanthanum.