I have 2 rooms side by side. 1 4x8 tray w/ 2 600hps in dirt. they are 4 weeks out from harvest. and the other room is a 4x4 flood tray filled with hydroton and 1 600hps ebb and flow. they are only 1.5 weeks into flower.
I noticed a thrip problem in the dirt room, i thought i had them knocked...