ya thats the prob. im tryin to find a decently priced 400w hps but until then they r gonna have to use sum sunscreen so you think the heat is a reason for the yellow spots?? i just got my feminized seeds in the mail so im about to flower these females to be (hopefully). i know its early but id rather flower early and see what sex they are, than to leave them vegging and they turn out to be males. thanks so much stinky. ive read so many of your posts in the past two months its ridiculous. so do you think those plants look pretty healthy??