Purple Stems

Stems turuning purple - nute burn? Ph level? Both maybe? I am grwoing in AG if that helps. Please help b4 they die. I have been posting in the AG section and no replies. so in a panic i flushed the reservior in case they are over-fed, at this point i couldnt just leave it like it was. My plants are about 11 in tall, stems are about the diameter of a finger - they were doing great but we had to relocate and that meant diff water supply.
What nutes should iu use?
Thanks in advance....

phosphorus deficiency? i had about the same problem with switching the water supply.

so what should i put on them now ? I have lots of regular gardening nutes...

Yea like Zed said, purple can be caused by temp, and it can also be normal. I have a few purple stems on a few of my main fan leaves, but it didn't affect anything. At least in the grow faq I read that you shouldn't panic. A lot of plants do that normally I guess. But first rule out the phosphorous deficiency, then try adjusting the temp.

Dudes thanks SO much for the quick inputs. Guess i had just been posting in the wrong place huh.
OK - well - being the noob grower, I was told to go ahead and 12/12 these. I really didnt think they were ready to flower - not much there TO flower, ya know. They are too tall and not bushy enough but i dont know how to change this now. ( I made a post entitled 'Clone and start over?' - Might help you see what mess this is in)
I HAVE had fluctualtions of temp in there (having to hide them when someone in particular comes over). But, see, this one plant really started with the purple symptoms and it is all but dead now.
I have the temp issue resolved.
Could you name a nute that shouldnt hurt but might take care of this ?
Preesheeyate it.....

am not to sure what you could be used for the phosphorous deficiency, i myself am not to sure.

Little help here....????

it could be the strain,it could be coz it gets to cold in ya grow room when the lights off or it could be a deficiency like they said.sometimes the stems of my plants turn purple and they still grow fine and yeild alot of bud.peace

its normal all mine have purple or red steems when there seedlings. does the plant look healthy if so dont worry how do the leaves look? and pic's would be cool. good luck

Try this link and see if it helps. I'm in soil so I can't help with hydro with any knowledge.... Good luck International Cannagraphic Magazine Forums - The Complete guide to Sick Plants,pH, and Pest troubles!

I also have purple stems on a few of my plants and think it's genetics....

Most of my plants have purple stems too, I wish they had purple bud.

Don't worry, as bwinn said above, if the plant looks healthy then don't worry.