Got any pictures? I'd love to start this.
What Litre/gallon pots are you using? (or buckets)
what nutes are you using?
the nutes must be costing you a bomb if you're using full strength everyday.
I've been using Mighty Wash for a week now, I know it's been working as I never see the gnats ontop of the coco anymore, however, like you said, there's probably millions under the coco.
I did a drench with the Mighty Wash also, hopefully that did the trick.
any other ideas?
How crazy... I stumble upon my plant today to find little gnats walking around in my Coco, now I have a Gnat problem to deal with!
Aghhhhhhhhhhhhhhhhhhhhhhhhhh. at-least it's not extremely bad, but it's bad enough all of these problems coming at once!