Don't know what a fungus gnat looks like (I live in a semi-arid climate) but the "red" part sounds like a red spider mite. You need to get a handheld microscope (at least 30x) and see if this is what you've got.
senorx12562 Reviewed by senorx12562 on . just wondering if any1 could tell me whats wrong with my plants This is my first time growing and i am useing NEW ERA potting soil..it has time realease plant food in it..yea i know shouldent have got that its only small amounts though(.14-.21-.14).its ingredents are.... 40%canadian sphagnum peat moss..-----35%composted organic materials(forest products and/or sedge peat..----20%vermiculite..---5% washed sand..and fertalizer...i ahve them in 5 gallon buckets and they have been doing great now a couple weeks later the growth is difigured and there are red Rating: 5