Hello everyone! Good read on this thread right here. There is more info here on bulb mites than anywhere else on the web it seems like. I recently have come across this same looking pest in my root zone. I have been researching and posting questions about what is in my media for a while now on other forums. No one can confirm that they are indeed Bulb mites and how to treat. Preditory mites is the only answer I can get for bulb mites and seems to be the one of the only courses of action for bulb mites. I think it's eithera bulb mites or mould mites. I grow in rockwool grow cubes and they seem to be mainly feeding off the alge on top off the rockwool. They are definitely in my root zone though too as when I pulled a plant out of the pot. There they where moving around slowly in smaller numbers. It seems there are eggs on the bottom of my leaves though too which really has me going for a loop. I have been inspecting my plants everyday for about two weeks with a scope and still haven't been able to find a single bug on the plants. So I have come to the conclusion they are capitate sessile trichomes as stated earlier in this thread. But I could be wrong. My plants have slowed growth, heat and humidity sensitivities, lower yields, less odor from plants in flower, a constant/or slight cal/mag deficiency, and rust spots on older leaves. I recently have started new clones and am getting ready to start over with my rooms and plants after a good sanitation and bomb just in case. I still have some plants in my veg room at the moment and two new strains I have recently acquired. I have one plant in dirt that has surpassed my plants in rockwool....wtf. I do feed them Recharge at least once a week. There doesn't seem to be any of these pests in my plant with dirt. Maybe I keep it too dry for them? It is literally right next to the others. It too has some of the egg looking balls on the underside of the leaves just in smaller numbers. That's why I think they are just the capitate sessile trichomes. What do you guys think? Trichomes or eggs? What kind of mite is this? And finally what other course of actions should I take to make sure I get rid of these pests. I know predatory mites only suppress them and do not totally get rid of them as far as I have read.