Looks like you still have plenty to jar.
Damn LED's. Most of my grow went that way too.
really? LED burn, you think? i know i didnt overfeed it but my LED was over 2 feet away @ about 60% and it wasnt showing symptoms two weeks ago.
No that should not have caused it but something seems to have burned them, if not light or nutrients then what? Do the roots look ok?
That's just about right for that light don't see it being the light...I don't think it is the light. Honestly I don't know what could have come on that fast that bad. Cause it is bad whatever it is.
water temp? I know you got the temp right but had to ask...