I had a similar experience with my current grow. My problem I believe was overwatering. OMG, they took forever to recover though all of mine were a lemon-lime coloring so I had different symptoms to yours except that they too weren't thriving..
With them being in big pots, make sure when you water that you do it around the root zone. (I was possibly overzealous in Under-watering once I clicked at the problem, it comes down to being able to spot something going wrong as quick as you can and then fixing it)
Dont despair!! They're quite resilient as I've found and once recovered have gone mental!! 😆
Good Luck!