Randy Holmes-Farley
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My Tank Thread
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So my hanna reads 0.03
My Triton reads 0.25
So they suggest I use GFO to bring po4 way down.
If my hanna is already pretty much at zero how can I measure the huge difference Triton are asking if I can't measure it?
That was my query really I guess I can only tell by icp which kinda makes my home test kits useless
0.03 ppm is not pretty much zero. It is well above ocean levels and is fine for a reef tank. I would not use GFO.