What's up with my sick plant?

So after quite a while of being perfectly green and dandy, my plant has started to turn yellow, and is looking somewhat unhappy. I am just waiting for the trichs to turn amber, so I think this plant is pretty much done, but as you can see some strange yellowness has begun to appear near the center of the leaves. I think it might be PH or Calcium, but I'm not sure. Any thoughts or advise are appreciated!

i think you have multiple problems. Dont worry about them if your about done, it looks like it could be from heat stress and defecencies.

have u been feeeding them at all ? whats your ph lvl at?

looks like a mag dif. and ph issues

I actually don't have the ability to test PH, I'd have to order a kit from somewhere as the closest garden center is several hours away. I've been waiting for the trichs to turn amber for over a month now, they are cloudy, but it's just taking time. Would these issues affect that?

I've been feeding them about once every other week with this schultz water drop stuff, which is 10-15-10

I forgot to mention that this issue only is affecting upper leaves. Lower leaves all look fine.

How far way is your light?

about 4-6"

Check you pH. My friend was having the same problem in a soil grow and when I checked his pH was way too high. We corrected the pH level and within days the problem got better. It's not nute burn or else you would see it starting at the tips and edges.

http://www.gardenscure.com/420/plant-nursery/100730-marijuana-deficiency-grid-troubleshooter.html

Try using the flow chart there below the table in the first post. Should help you diagnose the issue. Has to be some type of immobile nutrient deficiency since it is not effecting the older leaves. That rules out mg, even though the new growth definitely does look mg deficient. I would say it is an iron or manganese deficiency amongst other things that look like they could possibly be wrong. That is my guess. I suggest you go through the flow chart and try to diagnose as you know your grow better then I.

Pic of Fe Def.



Looks like you are in the later stages of flowering, I'm not sure how much you can do at this point, depends how many weeks left you have till your harvest window.

superfly18 said:

about 4-6"

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that''s fine if you're under some CFL's or flouro's but if you're using an HPS or MH get it 12-18" away

I'm actually using incandescent, but a few of them. I'm going to first try to treat with just a bit of epsom salt and wait a few days to see what happens. I'll check it out after a day or so, and then post back. For the most part, it is pretty much in the last stages of flowering like you said, but it is taking forever for those trichs to turn amber...

superfly18 said:

I'm actually using incandescent, but a few of them. I'm going to first try to treat with just a bit of epsom salt and wait a few days to see what happens. I'll check it out after a day or so, and then post back. For the most part, it is pretty much in the last stages of flowering like you said, but it is taking forever for those trichs to turn amber...

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Don't use incandescent bulbs. Spend literally a few bucks and get some cfl's. I would actually consider getting a 400w HPS. It won't run you much on electricity. If you're going to spend 2 months or more on each grow it's worth the investment. It will pay off after the first round. I use T5's for clones, 400w MH for mothers, and 600w HPS for flower. Get some HID's if you can.

Skip the epson salt on your plants. Flush them with pH'd water, then put them back on their nutes and add some thrive alive b-1 (red) or superthrive.

it's funny, the stores here sell grow bulbs (cfl) but they don't sell fixtures. I thought about ordering one off e-Bay, but I got side-tracked. Where can I buy superthrive from?

superfly18 said:

it's funny, the stores here sell grow bulbs (cfl) but they don't sell fixtures. I thought about ordering one off e-Bay, but I got side-tracked. Where can I buy superthrive from?

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you get cfl's at any store, even safeway.

check this link: http://genet.gelighting.com/LightProducts/Dispatcher?REQUEST=CONSUMERCATEGORYSUBPAGE&CHANNEL=Consumer&CATEGORY=Lamps&bulbtype=Lamps_Compact%20Fluorescent

they plug into the same fixture as an incandescent but you get much more light for your buck out of them. most people have already converted the bulbs in their homes to these because they put out more light per watt and save electricity. just go to any stores light bulb section and look for the spiral looking bulbs