It's not the light causing your problems it's who knows because you give no information that might help with a diagnosis.
What kind of soil? Any supplemental feeding? Water?
Looks like low Mg or N. Could be both but not knowing what they are feeding on it's hard to be certain.
I'd get some rich soil like FFoF or something like it then lift them out and fill the bottom up so the soil level is at the tops of teh pots unless you plan to put them in 5gal pails or something. The odd shape of those ones are likely restricting root growth and they are all bunched up in the bottom. That goes dry first and the plant can't absorb the nutes that may or may not be present in your soil.
I'd use some larger or at least regular 5gal pails. Put some fresh, rich, well aerated with perlite soil in the bottom higher than what you think you need. Have a serrated bread knife handy and if there are lots of roots all swirled around the bottom saw a big chunk of the root ball of fto get rid of those. Check to see if the height is right so when you put it in it's an inch or more above the rim of the pail. Now wet the dirt in the pail so the freshly cut roots have a moist place to land and then fill around the rootball a few inches at a time gently but firmly tamping down each few inches before adding more. Then water the pot until it's saturated and watch her go.
When you cut off those long stringy roots you force the stubs to sprout out new feeder roots along their length filling the root ball top to bottom. I do that all the time and after harvesting I can kick the rootball around the yard and it stays together because of the massive network of fine feeder roots holding it all together.
With all that light and lots of fresh soil to dig into she'll be showing vigorous growth in a few days.
Good luck!
