Your numbers jumping from 400-800 means they want more water and less nutes....maybe drop number to 300 and see?

Wish I could help you more with the bug issues but the only thing I really know how to do is spray Fox Farms Don't Bug Me on things. Never really had a bug problem so can't really address symptoms or treatments.

I DO think you are better off with a good bug spray (organic....safe to use until harvest) than the alcohol.

Less is more! Chant this several times a day. Good luck.