Quote:
Originally Posted by lastlight
if you like zero readings i highly recommend the phosphate checker =)
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If you're doing it right, a zero reading is good enough. Even if it's actually 0.04 (which is possible with a zero reading), that's low enough. If I knew for a fact it was 0.04, I wouldn't try to chase numbers and lower it to 0.03. And as long as you have fish and are feeding enough, there will always be enough trace phosphorus in the water for hard corals.
My point is that if phosphates are a problem, it will read above 0, and if it doesn't and I'm having a problem, then phosphates aren't the problem.