see how the new growth is coming in a much lighter shade of green/yellow, is that just normal for new growth coming in? i noticed it on mine too, more so after watering. after a few days it would go darker, then id water again and it would have a growth spurt it would seem and be a much lighter yellow, and then repeat like that every water.
I thought it was normal but after some research I thought it might have been an iron deficiency so lowered my PH a bit as I was at around 6.5 and I read iron gets absorbed better at the lower end. and then the yellowing did seem to stop. thing is it seemed to grow faster when the new growth was coming in yellow, I was actually pleased because i could see how quickly it had grown in 2 days. so im not sure if it was just going through a crazy growth spurt for a while and then slowed down or the ph change caused it.
is it just normal for them to grow like that? your plants are looking AWESOME btw!