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Old 05/13/2021, 12:06 PM   #4
Bob Nell
Registered Member
Join Date: May 2002
Location: pittsburgh, pa
Posts: 128
I had a similar experience only my reef had been running successfully for 10+ years. I could not put my finger on the cause but think my nitrate creeped up in the 30 to 40 range, difficult to verify on the test kit I was using. I also use gfo, which keeps phos at .1 to .15. I did not experience cyano or dinos. I have worked to reduce nitrates and now reads about 20 to 25 using a different test kit and have added frags, which have been doing well. I am hoping to get nitrates to 5 or so. Check with vendors because it seems most are at that or lower.

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