Howdy wikid , sorry to hear about your mold problem . I feel your pain as i have dealt with it several times before. MOLD SUCKS!!! So your thinking of expanding? If i were you i would get 600 watters girlie, you could allways use your 400 for veg. 2 600s over a 4 x 8 table would kick-ass!! Not much more energy than the 400s but a ton more lumens!! Anyhoo your garden is awesome, looks to be a happy harvest!
peace
bonz
peace
bonz