Hey, I run two 2'x4' flood and drain systems in closets which are ventilated a few times a day by opening them up and using a fan to get the air out. In the vegging closet i have three old school florescent 4' set ups with one warm and one cool white bulb in each. In the flowering closet i have a 250w heat lamp lighting 6 plants that average 23'',(also in a 2'x4' flood and drain.) The veg closet has about 8 plants at 1 foot high. Both closets average about 80 degrees. Both of the closets have little black egg things on the underside of the leaves and a few spider mites on each. there is also small webbing between the branches around the nodes. I thoroughly sprayed each one of them 2 times, three days apart. I also put a few capfulls of sm-90 in the reservoir,w/ 20 gallons in it. I use botanicare nutrients, pro grow food with liquid karma for the veg closet and fruit and flower formula in the flowering closet. The brown tips are curling upward all over the plant, from the top new growth down to the bottoms, in both closets, is this from a certain nutrient deficiency, the sm-90, spider mites, or something i am missing? thanks
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Brown tips curling up.......?