The most common is just because it's new vigorous growth and it takes time for less mobile nutrients to keep up. (Iron or sulphur)
If there isn't a problem then they will green up.
Other common issues are light burn, ph problems but you've provided no info other than a couple of pics .
The most common is just because it's new vigorous growth and it takes time for less mobile nutrients to keep up. (Iron or sulphur)
If there isn't a problem then they will green up.
Other common issues are light burn, ph problems but you've provided no info other than a couple of pics .
I'd say no, but upon further inspection, I do see a tad bit of yellowing starting. Can you give some more details? Light wattage, distance, feeding, medium etc. Can't help much without those.