Thanks for the recommendations, CB.
In the end I just couldn't figure out how to do it without dismantling the whole setup.
With the mini-ecosystem established, snails, microfauna and such, I didn't want to take a chance with any pesticides. Had to go mideval and just burn everything.
I can imagine your struggle with mealybugs in a greenhouse, they are the worst pests I've come up with. Good luck!
High hopes for recovering this tank.
But if I'll see another one of those buggers, I'll torch my apartment.
"There is no name for what I'm going to be when I get big."
Earth. I think we can make a buck on it so let's destroy it.