Ugh I knew sleeping until 7pm yesterday would bite me in the ass...Checked some of the stems and I noticed some very slight red tint. Got this from one of the stickies, "
Some deficiency during flowering is normal, but too much shouldn't be tolerated. Red petioles and stems are a normal, genetic characteristic for many varieties, plus it can also be a co-symptom of N, K, and Mg-deficiencies, so red stems are not a foolproof sign of P-deficiency. Too much P can lead to iron deficiency." So far I've only noticed it on 2-3 side branches on the bottom of the plant. Yellowing has stopped as far as I can see. Anyway, I'm going to water with just plain filtered water like I said, but I'm going to continue watching. I'm more inclined to think that the plant is Nitrogen defiecent based on this, "
Older leaves become yellow (chlorotic) from lack of chlorophyll. Deficient plants will exhibit uniform light green to yellow on older leaves, these leaves may die and drop. Leaf margins will not curled up noticeably. Chlorosis will eventually spread throughout the plant. Stems, petioles and lower leaf surfaces may turn purple." Switch out purple for red and you just described word for word what was happening to my plant. Without any Nitrogen high fertilizer the only thing best thing I can do I think would be to leave it alone, until the all the levels of the NPK come down and then start my flowering nutes.
I requested a free sample of this stuff:
http://www.hydroponic-research.com/products.html. There's a thread somewhere on RIU about this stuff. Apparently it's the new craze or something. It's a 16-10-30 which is obviously for flowering, with just a bit more N than K. Seems like a good ratio to me. They have hard water(tap) and soft water(distilled, RO) fertilizer.