So after further research, I am looking to modify my canister filter. I am in the process of converting my 120 Gallon FOWLR
to a reef. I have an Aqua C remora PS, Emp 400 Hang on back and Marineland C 350 and about 50 LBs of live rock. I know I need more live rock but is costs an arm and a leg. I do about a 20-25% water change every two weeks and can not get my nitrate below 20 ppm
. It is about a 3 year old tank. The canister has filter floss, filter foam, carbon bags, bio balls and ceramic media. I know the canister has to be the reason why I have any nitrates but I do not have enough live rock for proper biological filtration. What is your expert opinion on what to change in the canister? Would it be ok to remove all the bio balls at once and replace with Live rock rubble i have had in my tank all along?