Cal defeciency?

[uzisuicide]

Indoor
MG moisture control potting mix
42 watt cfls
humidity 40%
12/12 for 3-4 weeks now
The problem seems to be occuring toward the top of the plant. No nutrients have been added since fixing a nute burn problem about a month ago so I dont see how that could be the problem. Flushing doesnt seem to produce any really noticable results. This is why they may look a little overwatered in the last pic. I have been watering with distilled water the whole time (reverse osmosis a couple of times) so I am thinking it might be calcium def. Then again maybe not because one of the plants which is more sativa than the others is completely fine. Interestingly this is the only one that is not budding and is skyrocketing in height while the others are at a stand still.
This has got me pretty confused and any help would be much appreciated.
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http://i699.photobucket.com/albums/v...7/100_1389.jpg
http://i699.photobucket.com/albums/v...7/100_1401.jpg
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http://i699.photobucket.com/albums/v...7/100_1391.jpg

uzisuicide Reviewed by uzisuicide on 05-05-2009. Cal defeciency? Indoor MG moisture control potting mix 42 watt cfls humidity 40% 12/12 for 3-4 weeks now The problem seems to be occuring toward the top of the plant. No nutrients have been added since fixing a nute burn problem about a month ago so I dont see how that could be the problem. Flushing doesnt seem to produce any really noticable results. This is why they may look a little overwatered in the last pic. I have been watering with distilled water the whole time (reverse osmosis a couple of times) Rating: 5

[Rusty Trichome]

It's best to fill-out the troubleshooting form, but they look starved, overwatered, and possibly rootbound.

I'm guessing the older-crispier leaves were a result of the burn? No way to fix those. Keep an eye on the new growth, and watch for any disfigurement or discoloration.

Do you have a source of calcium handy? A little shot of CalMag added to their nutrient schedule wouldn't hurt, but I'm doubtful that's the cause.

Did you stop feeding because they are in the Miracle Grow Moisture Control? The nutes in MG don't last forever. (three to four weeks max, on a mature plant)
MGMC holds moisture, so you have to adjust schedule to prevent overwatering and root rot.
How long have they been in the same container? (when was the last transplant?)
What kind of flowering nutrients were you planning on using, and when do you plan on resuming their schedule?
What additives were you giving?
What's wrong with your tapwater, that makes you want to use other sources?
Sativa dom's usually require less nutrients in flower, so likely it's ok with restricted nutes so far...but I'd feed them all pretty soon. In the next few minutes would likely be fine, but fill-out the troubleshooting form (and get an answer) before doing anything dramatic.

Have you found the proper use of your nutes, so you won't burn them again...? List the quantities and schedule when you fill-out the form. :thumbsup: