i never had problems with fox farm soil before, sorry that you are. but dont let it discourage you and your grow. your plants feel your vibe so try to leave your 'tude at the door so to speak. there two different options, one you can put all kinds of different junk in your soil and kill them and hope it doesnt fuk shi up. or youo can do what i do, complete xplant. i simply slide the rootball out of the pot and knock as much dirt as possible from the roots and take notice to the color of the roots white fuzzy good, discolored yellow brownish = dead. the larve from the gnats feed on the roots themselves before maturing to adults with wings. take away these dead roots gently or you will have future problems with root rot and other desieses in the very near future. the happy frog you were using, was it kept out side or in a garage for a period of time before using? you might want to get some different soil, i am assuming if you are capable of getting happy from you can get ocean forest also, seald bags, no rips, fresh if possible. superthrive or vitamine b1 and plenty of TLC. good luck and happy growing