I use Azamax in my rez every time I use it. I don't mix it with nutes though but I do mix it into water that is already nuted(just have to keep an eye on the PH for a few days as it will throw it off a bit). I just pull a cup of water out of my rez and dump about 30ml of Azamax into the cup and mix it up then dump it straight into my rez. It works great like that for fungus gnats. For Thrips, I do the same but mix in 40-50ml of Azamax to a 30gal rez. HOWEVER, I haven't used it against Mites so I can't say how well it would work. If you have just a few mites then it may work ok if you mix it strong (20ml per 10gal of water) But keep a close eye on them for about a week, and if they don't die off after 7-10 days, get the Floramite or Forbid.