Bag of Biology...GH Just Right Xtra Potting Mix...

[Tnelz]

Thats the nice part about Just right extra, its very sterile. I have heard of Roots organics soil carrying fungus gnats, although I never noticed this in FFOF. If you want nutes in the soil just add a cup of mixed dry ferts to your mix. You can get a bag of dr earth organics dry fertilizer for $10 and it will last a long time. This will make it equivalent to ffof or roots. If you want to save money just go get a yard of loam for $45 and some compost, and make your own mix.

Hate to be the bearer of bad news but just right gets fungus gnats too bro. Its not sterile its inert. Meaning it has no nutrients. Fungus gnats like it just fine.

 

[rubthe nub]

I've seen fungus gnats in every medium I've tried, soil,peat based(sunshine), coco, hydroton.
They seem to be able to live just about anywhere IME