Problem or phenotype?

These plants had alot of problems in the beginning, but have turned around since then, I think...

The center plant has smaller, curly leaves while the other 2 look better, what's going on here? All three plants are growing well.

5 gallon pots of FFOF, QB boards, veg bloom nutes sparingly. 3.5 liters water each when pot is light, and they get a slight wilt, that's every 2 days

Pestrofa,

Although i haven't used FFOF before, from what i gather it's quite hot out the bag.
The plants look a little overfed tbh. I'd stick to plain water for now.
May want to check your soil's ph too.

They do look overwatered as well, but if you insist they're not then i believe you.

I'd put it down to overfeeding, and possibly ph too. You'll need to check.

Good luck, and happy growing.

They need magnesium. How high is that light?

Yes, agree to much nitrogen, and had issues with overwatering in the beginning. Thanks, was thinking mag, I'm getting about 600 ppfd across the canopy, light is about 18" away, leaf temps around 78f