White Widow & OG Amnesia

They look a bit bigger and a lot frostier. I upped the B and lowered the A, so more phosphorus and less nitrogen starting now. I'll be lowering/upping it again next week, and after that is a 2 week flush then harvest. Seeing odd little salt specks on some leaves. I looked at them with a microscope and they look like little salty granules, they aren't showing bunched up together, just 1 speck of "salt" here and there, not very many at all. I wonder what it could be. I don't think it's any sort of deficiency, PM, or bug problem. The Widow seems to be asking either for more water or for less. I'd be leaning towards more since I only water once a day at this point, since my plants are in my closet it's hard not to let light leak in if I try to go in there to water during the day. I miss my hydroponic setup.