eww thrips.
Pyrethrin bomb is a good way to kill them. You have to set off a PAIR of bombs spaced a few days apart to do it right.
thrips require soil in which to pupate and complete their life cycle- I am surprised that you have them in a hydro system. Are there soil-potted plants around?
stinkyattic Reviewed by stinkyattic on . Help my ph raises each time i flood Hi, I have a flood and drain setup thats driving me crazy each day the ph goes up by its self, this turned my plants yellow last week when i didnt check nute for 2 days and it rose to 8.6 :mad: They made a good recovery a week later after I flushed the table and drained the nute tank, untill today I noticed they have started to go yellow again (I have been adjusting ph daily to 5.4). I checked the ph in the tank and it was on 6.4 so i adjusted it down with nitric acid to 5.4 mixed Rating: 5