help with my roots

i recently switched from an back to gh cus of the price mainly and ever since ive done this my plants have been in very bad shape. the roots are so weak they barely hold up the plants. the foliage looks pale yellow a lil droppy and fan leaves are dropping. thay are two months old and they barely are three ft. help me before i scrap these guys and start over. ive flushed with florakleen and it helped for bout a week and now they are showing signs again. i think i have locked up salts still cus im using half the dose of gh that i used from my last few grows and they still seem burnt temp in the room is 82 average and i use two 1000s. room sixe is 10 by 8

Situation critical need advice from a professional help!!!!!!!!

Comeon none got any advice for me dont leave me hangin on this one friends

Lack of response is generally due to one of two reasons; you didn't give enough details or else it's a problem that people aren't familiar with.

First question would be, are you growing in soil or other?

Im using black gold potting soil had lots of luck with it. I think my problem mite be temp related but not sure if theres any relation to the room temp and root issues

I've never heard of room temps, especially 82, causing root problems in soil. I would say you should start considering other factors. Soil that stays too wet is bad for roots and causes them to form a weaker base than proper watering. On the other hand plants that aren't watered enough will also have a weak root base. As I have never grown in soil, that is as much help as I can offer. Good luck!