I could also squeeze in a little AC 50 that wouldn’t really stand out and wouldn’t have to move my tank
Only problem is I don't think the AC50 will fit on the rim of 75. They are much wider than a 55 or smaller tanks.
I have never used a sponge filter myself, so can't advise on how well they perform. With me I first used combo's of FX and ACs. Then after some months the hatred built of doing the maintenance on the FX. So I sold them all off and replaced with ACs as thier maintenance is so easy.Good point, I’d really like to avoid adding a HOB anyway. Would removing the sponge filter I had have this much effect??
Am I just being impatient?