Update. I have cut back light to 4x 96watt cf, flow cosists of rena xp4 2 hydor 2's (1 230 gph and 1 300 gph pumps for co2). I upped fert dosing to 3 tsp nitrates, 3/8 tsp phosphates, 3/4 tsp potassium, and 3/8 tsp plantex. I just finished a 3 day black out which went pretty well as I did it...