Help! Dying plant! What is wrong!?

I am growing with 2 1000w lights mh/hps. She is in a 5 gallon bucket dwc hydro system. The temp stays around 85 but sometimes climbs to high 80's or 90 degrees. The lights are about 2 feet over the plant. I am using fox farmgrow big nutrients. I also do not foilar feed. Plant is maybe a month in and about a foot and a half tall with tons of leaves. The plant has not slowed in growth from what i can tell but the leaves a curling all over the plant not just in one area. Some leaves even have missing sections as if they were being eaten. The edges of the leaves are turning yellow and the tips also. The tips go from yellow to a grayish color. Every leaf is affected so i dont think it is a bug problem. There are also very small dark spots on some of the more affected leaves. These darks spots might be the cause of some leaves looking nibbled on. Maybe overfertilizing? Please help!!! Dont want her to die!!! Thanks

also the roots are very white and the water temp is around 80 degrees.

Pictures man, we need pictures to help diagnose the problem or you won't get many people to reply ...

Pictures are coming soon!

not a hyrdro expert but if your water is 80 degrees you could probably drop the temp of your rez a bit. hard to say anything for sure with no pics

here are some pics. They have gotten much worse. will have my camera back for more pics soon. please help!

As of today 1/30 the top shoots are turing grey but the bottom ones are still green. anyone??

maybe over fertilzing

If this was some sort of nutrient or temp problem wouldnt the whole plant be affected? The inner leaves are as green as ever and look extremely healthy. I DONT KNOW WHAT TO DO!?

its really hard to say anything without good pics but here's a shot of a plant I had a couple months ago this plant has mites so look at the pic and see if you notice any similarities

Its getting better i cooled the res. temp down and reduced nutrients. its already improving.