I currently am setting up a 40 gallon saltwater tank fish only or reef haven't decided or bought the lighting yet, but i have a question; Will i need a Skimmer for a tank that small also would i then also need a SUMP for such a small tank. Currently mind you i have 2 fluval aqua-clear 50-60s that i will be running on it and they are putting me at 400gph so roughly 10 turns an hour will that be enough or will i need to purchase or build a SUMP and skimmer?