Quote:
Originally Posted by Judi
Some of the research I did claimed they just live in the medium and don't do any damage to plants, but I don't think that is the case. After I got rid of them all my orchids looked better, and my Christmas cactus that was on its way out miraculously recovered 
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I have heard both they don't harm the plants and they do - I would rather be safe than sorry. And even if they aren't harming the plants I don't wish to have a gnat explosion lol