WaxertheRadical
Well-Known Member
Welcome aboard Waxer and thanks a lot brother. I use the layer of perlite for watering purposes and helps keeps certain spear away from my medium. Since I use coco I've notice about 80% the time they have fungus gnats and a top layer gives them a hard time I've noticed and they die off quicker. I have not noticed them but it became a habit now.
Oh okay. Right on. I figured it might have something to do with that but wasn't sure. I've seen folks do it with diatomaceous earth as well. I'm assuming for the same reason.