I’d try a re-potting first, with a decent root pruning… move em a bit further away from the lights, and just give em half the water you’ve been doing. Let this be all you do (NO NUTES) for a few days and see if they don’t perk back up.
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Plus add a little extra perlite for added air for the rooters and better drainage……
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Sorry guys. I forgot to mention that they are in SIP buckets.
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I forgot, you’re using that SIP system. Did you put a raised screen in the bottom?
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Your roots may be in the water then. You really should try the basins I am using on my sips it will limit that to a great degree.
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Is the light she’s under now much brighter than the other room she was in? Either that or a root issue maybe.
I’m not sure bro. The roots have to be into the water… Right?
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I have roots to the bottom of all my SIPs.
Not necessarily, it just has to keep the soil to wet….
Or the roots taking up to much water. Roots that stay on water aren’t getting much air and suffer because of it.
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Having never messed with SIP system, I’d hesitate to try diagnosing anything other than what I’ve already said.
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I have no roots in my water at all! And never have had a problem with my soil being to wet.
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Some roots in the non aerated water not so much a problem. Lots of roots will rot with little oxygen and throw the ph all outta whack. They’re drinking nasty water. 
just my thought process. Never used Sip systems.
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The soil is dry as a bone. If your roots never hit the water, how does she drink anything? I must be too wasted to understand. lol
Your thinking is correct. I edited my above post.
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Just another of the many reasons I keep it simple… keeping it to the basics never fails me.
I’ve always been an advocate of ‘if you complicate things, complications occur’!
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My hole where the overflow of water is 3 3/4 above the bottom but the roots are lower then that so absorb the water until it gets to low. Smaller roots do get to the water but not enough to cause problems
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Ok guys, I gotta go lay down a bit. I’ll cays after awhile.
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Catch ya later, bud. 
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If too many roots in the water is a problem then I’m truly screwed. My design doesn’t allow for access to the root system. I can’t get in there to prune the roots back and looking through the fill tube shows a lot of roots all the way to the bottom.
OH and I use a siphon pump to change the water out from time to time (about every 10 days or so) so they don’t sit in nasty.
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