Don't take this information as gospel.

I've seen similar spotting damage from a very small, thin white moth. I couldn't tell you what it was but the little critter could move fast. I spotted it and squished it. Never had those spots again.

Not sure on the curling, dried tip issue. I would think maybe heat, damaged leaf veins or root damage could be to blame. Doesn't look like its happening to the whole plant anyway.
elcheapo Reviewed by elcheapo on . Leaf tips curling up - dehydration? Hey guys, haven't received any feedback in the plant problems forum yet so I'll bring it to the real experts here in they hydro section.;) Some of my leaf tips are curling upwards. They look dried at the tips and feel dry to the touch. In addition, there are some discolorations on some of the leaves, not yellow or brown, just lighter/dryer shade of green. Almost as if the top layer of "skin" was peeled away...(bugs?) Other than that the plants look great. The roots look & smell Rating: 5