2 strains...

Pictured are my gelato and white widow. Pretty easy to know which is which.



They were seeded at the same time, sprouted days apart, and went under 12/12 at the same time.

They just passed 6 weeks of flower and have always had the same water/nute schedule.

The gelato is yellowing quite a bit compared to the white widow. Should I be alarmed? Perhaps it is a 7 week strain? I cant imagine my 2 gelatos have nute lock and my 2 white widows dont.

Thoughts????

Looks like you do have a defficiency of some sort however some strains do have a tendancy to begin to go like this at the end of flower. Could be ph or nute issues creating the ph lock.
If it is still growing i wouldnt be overly concerned if it was me.
If you want to be pinickity do a quick few day flush with phd water to see how they respond. check your run off, ensure its not overdose, im slightly unsure at this point, does look like defficiency but alot of the leaves are too far gone coukd be a combo of both. if in doubt flush if it doesnt improve add more nutrients. Thats my basic problem solving technique haha... they look awesome i woukdnt be bothered, the flush is coming soon anyway. You might end up with some super clean smoke supposedly(if flushing actually helps) best of luck.

Its just N defiency. You need a good amount of n to make it through flower or you'll run out early. Week 6 isnt bad you can bump the n a bit to slow it down and make it to the end