Pineapple Chunk Feminised From Seed Dwc 5 Gal First Time

They r doing well. I'm worried if the brown on my roots is from flora nova grow or rot. We r on day 52 and looking good. Gonna flip real soon.

4 ml per gallon so 14 ml of fng.
14 ml of b1. Also I foliar feed with the b1.

Temps are still high. Plant height temp is 5 degrees higher than air outside the room. About 80 outside and 85 at bottom of stem.