Trod
The indecisive one
Now concerning the fish, I asked to see peoples sumps and central filter systems and was totally shocked at the under gunning that most of these places have for filtration, I mean in my books where I will really make the money is in selling my stock, and the various stuff to feed them treat them etc..., does it not make sense to make sure I have a good filtration system to keep my fish alive and not lose them to bad water quality in my storefront.
Most people on here use Live Rock for filtration (Berlin method) as long as you have enough for the size of the tank and enough water movement created by powerheads, then this and regular water changes are enough to maintain good water stability and quality. A good protein skimmer is also recommended