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what leaves are being affected by the discoloration? older bigger ones, or all the newer small ones? the reddish browning tips im seein in your pics looks to me like a magnesium deficiency starting to take way. bout 5 weeks in? I would assume you should have been using a light nute mix a little...

My bad I did forget to mention the p.h of the grow. We are rockin a soil medium and I do in fact have a p.h. meter. I shoot for a p.h. of 6.3-6.5 every time i water. Ill look into gettin a soil ph tester in the near future though. Ill roll with the Magnesium def theory for now, got some epson...

Hey guys, Just noticed these interesting new patterns on a couple of my leaves. Seemed to only be concentrated on one plant at the moment. Currently watering every 3 days with a mix of FF Grow Big and a dash of molasses. Room is lighted with one 600w HPS lamp and a couple 85w cfls spread...

Sorry forgot to mention, I thought a Nitrogen overload would turn the leaves more towards a darker, "forest" green as opposed to a yellowish tint with necrotic spots.

Good lookin on the replies. First off to answer the temp question, I do have a heater located in my growspace that keeps a pretty constant 72-75 degrees. Yallreadykno, just gonna cut any leaves lookin like 50%+ of damage and let the plant do its thing. I figured it was nute burn, I need to...

Hey Guys, Got this interesting brown/rust colored spotting appearing on a few of my lower large fan leaves. These plants are currently in their 3-4 week of vegetative growth. Have been looking at numerous forum posts and referencing a couple books but cant seem to find an example quite...

What temperature is the room you are storing your plant in? Also, what is the temperature of your soil. Purple color like that typically means a phosphorous lock up, which occurs at about 50 degrees f. We are entering a very cold season where I am living and recently had a very similar problem.