How long do them in water? Scott's is decent but it is fairly cheap and may be where they came from. I've been doing this for a year now and have probably had the gnats for three months. So it hasn't always been a problem. I'm sold on Nematodes and mosquito dunks and will continue to use both as a preventive measure. I just repotted several plants and a few of them just had NOTHING left for roots. No wonder they're looking so bad.
Lemuel714 Reviewed by Lemuel714 on . Ravaged by fungus gnats??? I started noticing gnats a while ago but didn't worry about them too much as it didn't look like they were actually damaging my plants. I was getting a lot of stunted growth but didn't connect the two. After a while the gnats got thicker and my plants started turning yellow, drying up and dying. Long story short, I read up a little on the gnats and went to war with them. First of all I keep two rooms. I've got one room for vegetative growth with a couple of t5s and a flowering room with Rating: 5