Also, since I probably won't totally eradicate them this round and see the signs of deficiency (due to the aphids) should I go ahead and give them some cal/mag? I feed with GH flora micro/bloom 6/9 per gallon (wouldn't normally need cal mag if it wasn't for the aphids sucking on my roots).
I have found supplementing with some extra nutes when the plants are deficient from aphids, to help a bit. The deficiency never goes away, but it just may help the plant continue to grow. Be careful you dont over do it towards the end, they still should get a proper flush