Have you flushed at all? FF does accumulate salts in the soil, so I flush with plain-ph'd water, about once a month.
How often are you giving the nutes? Have you seen the FF nute guide for soil...?
FoxFarm Soil & Fertilizer Company

Personally, I give half of the micro's (Big Bloom) that they recommend, and the ladies appear to appreciate it very much. Also...until you get used to identifying and solving issues...would eliminate the molasses. Adding it to stressed ladies, stresses them more.
Rusty Trichome Reviewed by Rusty Trichome on . Plant problems AGAIN! Hello everyone, need a little diagnosis. Am growing in ocean forest under a 600 hps. Temps are between 76-80, humidity staying between 60-70%. Transplanted into 3 gallon pots about 5 or so weeks ago. The girls are into their 19th day of 12/12. Fed them first time in flower with plain water, then 2 tsp of bigbloom and onetsp of tiger bloom(started looking shitty). Next water was water with black strap 1tsp. Then another dose of the nutes at the same strength, and then water again with Rating: 5