That would be a good idea however probably very stressful on the plants at this stage. But you did make me realize the fact that I'm growing in coco and in a cabinet, may just give me chance eradicate these creatures without interrupting my perpetual much. Coco just presents a much cleaner situation all the way around. Could be wishful thinking.
Despite there being tons of conflicting info out there about these particular pests, I keep learning more and more about these things. I feel like compiling everything I've gathered into one post. Like if you don't put Vaseline around the base of your stalk, when you treat your soil they will climb up your stalk, hang out until the soil is less toxic, and go back down to recolonize. They also will gather and right below the root ball where often the pesticide won't reach.
It seems that many have found the only way to truly eradicate these root aphids is to stop your growing cycle, completely sanitize, and then restart from scratch. There have been many reports of people having long term success with Met52, although I think that getting a granular version to add to your soil might be the most practical way of using it. I understand that the predatory insects atheta cassaria (rove beetle) and Hypoaspis will keep these under control. Lady bugs will go to town on them but I don't think lady bugs bore into the soil. These things are willing to venture very deep into the soil.
So after much toiling and research I ended up express ordering a bottle of
Big Time Exterminator. It should be here today or tomorrow. I'm not really expecting them to eradicate the problem completely. I was really just looking for something to nuke the bastards. We'll see though, maybe the stuff will work. Given it's dilution rate of 2-10ml per gallon as a root drench, may make it the most economical of any of these. that's primarily why I chose it over SNS 203