I currently have a marineland high capacity sump. I was wondering if the biowheels that come with the sump is good or bad for the tank. I dont know if I should remove the bio wheels one at a time since I dont want to cause any spikes. I have over 220 lbs of LR
so I dont know if the bio wheels are needed or if removing them instantly will hurt the tank. My Nitrates have been at a constant 20 and I think this may be due to the wheels holding alot of waste. I have been debating how I could add a refugium. I dont believe the sump I have now would give me the option of adding a refugium or maybe Im wrong. If anyone has advice on what I should do or how i could incorporate a refugium that would be greatly appreciated.