Hi, i have a lido 120 and had to do a full water filter change after most of my fish died. I only have a 11 inch pleco and a betta left. So i wanted to start a new cycle and it was going well, but my nitrites are sky high and not changing to nitrates. Ive tried water changes, bacteria addition, but it looks to have stalled. How do i get it moving without harming the fish?
Any advice welcome
Any advice welcome