I have a 75 gallon tank and I am thinking of making a sump but I am worried that it will not be good enough. Which do you prefer sump or hob filter? It will have a moderately heavy bioload. If hob any ideas of what to get? Penguin 400 seems common? I think a hob canister will be a lot easier then making a sump. But if a sump, what size tank would I need to use for a good enough filtration?