I am not using any nutes. The water was at 150ppm to start with. I let the water level drop on its own and it eventually rose to 200 ppm. It is a simple DWC set up I have used for 3 grows already.
The temp is at 79 degrees with thermometer next to the plant. Using a Black Star LED 240watt.
Used the GH flora series for every pass grow and don't add nutes till roughly 3rd week.
If you read my original post my ppm is currently at 200. That would not burn the leaves.
Trust me I know what a burned leaf looks like. The leaves are not dry at all.
i DID read your original post, andf you declared "200 PPM" but we still dont know what is in the 200 PPM of non-water chemicals.
some municipal water supplies come out of the tap at 300+ PPM and if that 300+ PPM is agricultural runoff like say... ROUNDUP....
you also may have some disease (bacterial or fungal) which slipped past your sanitation procedures.
since your image is just a yellowish blur and sharply in-focus hydroton, no-one could even guess at the problem.
shit it could just be a diseased seed that was gonna drop dead even if you planted it between the welcoming bosoms of Bob Marley's mother and watered it with the tears of Hailie Sellassie.
sometimes dope plants just die brother, and we have to grieve, sanitize, replant and carry on.
your dope would have wanted you to find some other ganja to make you happy.
She's getting high with the angels now bro.