The tank is 75 gallons and I don't have any equipment for it yet (or fish, don't worry!). What kind of filters would work really well? I've heard that Mbuna's like being a little crowded, so the filtration has to be excellent. I was thinking of using 2 50gallon Aquaclear HOB filters (I've used that brand's filters before and really like them). Would that be good?? Any other suggestions?