Tips please!!!

7 week old plant hydro im uses general organics/bio thrive 6.3ph 7850ppm

It's the 7850 ppm. Cut by a factor of twenty.

It's overfeed. I'm assuming you typo'd and it's either 750 or 850. Drop to about 400, is my advice.
And inspect your aeration. That plant looks "overwatered", which in hydro translates to "gasping for dO2". cn

There is so much wrong here. First get your ph under 6.0. Then back off some on the nutes. Maybe cut to half of what your doing. Try and get you temp down. Can't realy tell it's says ether 82.6f or 32.6C. What do your roots look like? And I hope you have the water level just under the basket. More info would help better. But that's just what I can tell from pics only.

Hope this helps..View attachment 2381792