I light bleached these puppies...week #3 flowering. Using 400 watt CMH bulb...

Once the white appeared on the fan leaves...it got worse and worse...VERY gradually...and the plants never recovered. After I chopped them down; after 8 weeks...I noticed the underside of the fan leaves was still green?...very strange.

The buds never did show any change of color and the plants quit growing after 5 weeks. I guess?...I stayed too close, with the light?...and switching to HPS didn't help, either...