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Dominick37
08/07/2013, 01:05 PM
have a question i wanna add a cuc,but my nitrates are between 30-40 now. i was well over 160ppm few weeks ago. is it safe to add a cuc with nitrates between 30-40ppm?
robotman
08/15/2013, 03:54 AM
have a question i wanna add a cuc,but my nitrates are between 30-40 now. i was well over 160ppm few weeks ago. is it safe to add a cuc with nitrates between 30-40ppm?

wait a little longer
Sugar Magnolia
08/15/2013, 08:22 AM
Do a 20% water change to bring the nitrates down, then wait another week and test again, then do another water change.