Hi ya Green, the 315 is kinda pricey BUT I like it a lot, heat output- low, footprint perfect for the 4x4'-- photo quality you bet. The star is F.F neuts. 50% every sun. am. 50% cal-mag every other sun. "HOT" is Kind super duper soil. I let it dry pretty well and water heavier around the out side to try to get the roots to stretch and get into the good stuff. Like I said i'm not going for a bumper crop. Just want to see what the diff. is going to be.Oh and I am very happy with Batch 64 Moonshine potting soil. Which is in both pots.