Get some Pyrethrum, and kill the bugs. It's made from chrysanthemums, and should be fine. (low toxicity) Over a short period of time, the chemical compounds in the stuff dissolves. The more you dick with 'em, the more damage you're apt to do.

Pictures would help, but you'll need a few more posts under your belt before the web site will allow it.
Rusty Trichome Reviewed by Rusty Trichome on . Quick yellowing in advanced flowering. Plz help Hi all, tanks for having me, first grow, first post ;) Before we get into business i would like to anticipate tat i ave done my thorough researces about the issue at hand and found many similar problems, similar, but not same, and would like some reassurance. For starters the system: 1 400 W HPS with full ventilation 15 l pots (that's like 4 gallons to you yankees :)) All mix soil (bought from growing store) Temp and hum: 76.8 Average, 40% Stable Rating: 5