Hello, I am wondering which system would be better for growth? Its gonna be a DIY unit, using 6 tubs, with 1 tub a control res, run with a chiller in a 4x8 tent under three 600 watt hps lamps, air cooled. Tubs will be layed out 3 each side of the tent. i have a 900 gph pump I plan to use to power either the undercurrent, or the ezcloner sprayers.