I dont know why my Nitrates are high. I have a 12g dx nano cube for well over 2 months. I do the occasional water change every week 20%. Currently in the filtartion I have the sponges, carbon bag, ceramic rings, bio balls, two media bags: one ( with chemi-pure) the other (mix of phosguard and nitra-zorb). I just finished my water change and testing tonight and everything was fine except nitrate. What can I do to lower the nitrates.
THANKS
THANKS