Grow Mediums Will mosquito dunks or Azamax kill beneficial bacteria?

[KC75]

I had the same gnat issues with OF soil. Before I even got my seeds i was all set up and waiting. Only to find a tent filled with them.
Removed all pots and soil, cleaned tent again. Took a very large tarp and poured out all the soil. Spread it out in the garage on a cold night. Very thin spread. Old lady neighbor told me to do that. Apparently the gnats need a few inches of soil but i spread it very thin on the tarp. Next day, no gnats. Tested by refilling a single pot, back in tent and waited a day, no gnats.

 

[STILLSMOKIN]

Not being a smartass, but coffee grounds are high in nitrogen, do you have to adjust for that? If so, how?

When in flower make coffee and used the grounds after. But it has never affected my grows because its a natural nitrogen.