http://forum.grasscity.com/grow-journals/110481-second-cfl-led-bagseed-grow-2.html#post1230868 Link to a post in my grow journal. Do I do anything or let her finish flowering and hope for the best? Note: I wrote that the yellowing is between the veins, but on some leaves it's yellowing only at/around the viens!
Yellowing BETWEEN veins is a classic sign of magnesium deficiency. A tsp of Epsom salts per gallon would be worth a try.
And what about yellowing OF the viens? I have both on different leaves. Combonation deficiency? I fed her Tiger Bloom most waterings, and the Fox Farms soil has some nutritional value as well. She's a porker.