Hello I grow figs indoors. Zone 3/4 over here. I recently had a problem with spidermites carried from a new plant I purchased, not a fig. Stupid bugs carried on my clothing to my figs...I've been using need oil which is at least keeping them at bay and slowly eliminating them. I guess I had two questions.
1. Is neem oil the most effective way to get rid of them.

2. Is it possible that artificial lighting can be burning the leaves which have been developing brown spots, drying and dropping.

2.a. is it possible that the lights were only burning because were too close to plants and were creating hot spots where the oil touched the leaves. (I know what drops do this)

Thanks for any replies. I'm seriously concerned. It's touching all my trees, and to lose 30 fig trees is a major blow to the heart and the wallet.

It's not letting me edit. But I meant neem oil. Auto correct is world's most annoying invention.

I use neem oil also, but from I have heard and experienced is the oil when used excessively on the leaves can clog the pores and also spraying during or right before heat or strong sun is a no no.

Okay thank you! I have improved the air circulation which seems to be helping. I will try to spray an hour before or after the lights come on and not as regularly. I've been spraying at the end of the day, but this may be still too hot for them as conditions are artificial. Thank you very much!

When growing plants indoors it's important not to have the light too close and have humidity. Air circulation helps also to keep the plants cool and get ride of hot spots.

Okay thank you! I had read how having light close to young cuttings helped them grow faster. I tried it with trees, but I think the light was too close as you said, I already moved it higher! I will be picking up another fan this week to even out air circulation. As for humidity I will look for a meter to test it. Do you know what is a good humidity range for figs? Or how to improve it?

If you have the room you can get a grow tent. Some of them have built in fans and such. Depends on your budget and your absolute need for one. 

Hi,
Put your hand on the leaf and let it stay for a minute. If your hand gets too warm, you need to put more distance in between the leaf and the light.
For spraying, do it at night, to avoid the magnifying glass effect that you get when a drop forms on the leaves.
Good luck !

Are you using T5, Halide,cft or high pressure sodium?