So I just moved my ladies into flowering 3 days ago. I'm using Canna Nutes, fed through a spaghetti-tube top-feed system. I've got the girls sitting in coco, and getting fed in 2, fifteen minute sessions. One when the light comes on, and one 6 hours in. Today, on the biggest leaf, of my biggest ChemDawg plant, I noticed an odd pattern of yellowing. I think it's got to be Nitrogen, judging by the look of it. Can anyone confirm or deny this for me? Most other deficiencies I see seem to expand from the edge of the leaf, but this seems to be a striped pattern along each individual section of the leaf blade. I feel the need to explain it, as I know my pictures have a huge yellow glow that is hard to see through, caused by my 1000w HPS. As a first time grower, I'm sure I'm being obsessive, but I'd rather catch something before it gets worse. You can see the rest of the canopy looks pretty solid. Thanks guys, and sorry for the discoloration, but I think it's still easy to see stripes. Taking suggestions...