I’ve been set on purchasing the Fluval U4 internal filter for my 55 gallon tank as it seemed suitable for the size. However after a bit of research I came across a couple of negative reviews which have made me question it. Anybody have experience with this particular filter? I’m planning to keep cichlids which I assume will produce a fair bit of waste so curious if this would be up to it. Failing that, canister filters are something I’ve not considered and have no experience whatsoever using but am open to. The only thing is the Fluval 307 is wayyyy out my price range and not something I would consider right now. Are there any other models anyone could recommend. I’ve also read they are considerably more expensive to run