Question - I guess I should get a protein skimmer - should I also get a seperate internal pump just for better water circulation?
Answer – Water circulation inside a marine system is of paramount importance. Without circulation, we have dead areas in the tank where detritus and food particles build up. These no flow areas will start to generate nitrates and phosphates un-necessarily and will, in turn, start to feed algae and bacteria. So, when discussing circulation in the aquarium, we have a few factors that need to be considered. Is it going to be a Fish Only (FO)/Fish Only with Live Rock or a Reef (FOWLR). If it is going to be FO/FOWLR, then the water flow can be quite mild, and we are only talking 10x water circulation per hour (Aquarium volume (gallons) x 10)). Or if its going to a Reef tank, then we need a good high flow around due to the corals, and for this it is recommended to be about 25x water circulation per hour (Aquarium volume (gallons) x 25)).
it says for a reef though.