I have found that fluvals products are hit of miss. Ive had problems with 400 being loud and ive had some old ones stay quiet for years. They also have big problems with micro bubbles on their Fx5. They also had problems with their 404 canisters tops poping off durring power shortages. Im trying to get away from fluval. Its hard because they have some high flow filter for realativly cheep.
Best answer.....enhim canister. Give up on HOB filters. Canisters are so much better.
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Emperor 400s are made by Marineland, not Fluval.
