Super Lemon Haze Discoloration?

Entering into Day 21, or three weeks of veg. The ladies are growing up quickly on a 50% Dyna-Gro regimine. Will be upping the nutes a bit for the final week of veg.

The NL#5 and Blueberry are really taking off. The Girl Scout and Super Lemon Haze are a bit slower, but this is probably because they are more Sativa dominant hybrids. Whereas the NL#5 and BB are more Indica dominate.

My concern is the Super Lemon Haze is showing a bit of discoloration on her leaves (see photo). Is this something I should be concerned about?

There does not appear to be a big issue IMHO. You may want to get some cal/mag but no problems in the immediate future.

i'd definitely give her some magnesium. GL