I have a 90 gallon tank right now with an FX4 canister and a Penn Plax Cascade 1000 canister running on it. I was thinking of replacing the Cascade because it’s starting to get a little noisy for my liking (rattling). I was thinking of replacing with a hang on back. Never used one before and thought the water movement would be beneficial. Any thoughts or recommendations on hang on backs? Or should I just keep the Cascade?
