As others mentioned flux is really a time cured problem not a 'do something' to fix type problem. There are mitigation methods against the problems it causes such as boxing it, sentry guns or other automated kill method to kill wisps (for fun box the node and pop a wither boss in it, they'll fight and he'll win hands down).
Best to have those in place prior to generating a lot of flux. Once you have the flux putting them in place is harder but even more imperative.