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Old 12/03/2017, 03:46 PM   #8
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DesertReefT4r's Avatar
Join Date: Sep 2015
Location: Mesa Az
Posts: 764
What are you using to test no and po4? You want a low res tester for po4. 0 on 1 test kit may be .9 on another which imo is not the end of the worl and you want some low levels no3 and po4 in a reef tank. Its possible your skimmer may not be keeping up with your tanks demands. In that case a simple skimmer upgrade will result in a drop in no3 and po4. More info is needed about your tank and filteration, age, bio load, lighting

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