Is 1200gph too much of a turn over rate for a 125 gallon? Do you guys think this is overkill for a 125 with just a wet/dry for its only filtration? I've read that you need to turn over at least 6 times the volume of your tank per hour but is there any harm in going for more than that? With a pump rated at 1200 gph what size bulkhead would i need for the overflow?