Quote Originally Posted by lampost
Is your soil pretty hot?

I used straight FFOF with a little perlite and that happen to multiple plants. They kept growing and as they got bigger they started to produce normal, healthy leaves.

I'll post up the trouble shooting form soon. The soil is pretty hot, haven't checked the temp but the air temp is now 87deg w/ac, was 89-91.5. I think a lot of it has to do with heat stress but now I'm really close to the 86 degree air temp recommended with co2 enrichment.