Done and done, sir! I think this time instead of doing too many WC, I let it get too dirty. Also I rinsed the sponge and carbon in a bucket of dirty tank water and it was filthy! Hoping this solves the problem. Know how right you are about water quality. Trying to get on that pristine game that you are on! Thanks again for your help man!Would be as ur nitrates may have been even higher.
Would do a wc about fin level. That would be better.