hi these are my 6 fast and vast autos under a 600 watt hps dual bulb, Wilma 8 pot hydro system with 6 inch fan and filter with 2 other cooling fans in a 4x4x6 tent. These beauties are only 35 days old, they have been on bloom muted for 8 days. Ppm is 900 and ph is 5.8-6. 20/4 light. Is...