Burmese Red Stems!

Hello everybody,
This BUKU is into it's 3rd week flowering. Watering is done every other day first with Flora Nova Bloom mixed at 1/4 strength in 1 liter of water then two days later it's ph adjusted water (around 6.0) with KaBloom mixed in at 1/2 strength in 1 liter of water. She needs to be re-potted (found out a good rule of thumb was to use the # of months growing as your # size pot and it's in a 1 gallon pot right now (germed 12/02/11). The rest of the plant looks fine, just these red stems are really unsettling to look at. Researched but can't find a definite answer. The soil PH is around 7.0. Been having a small problem keeping the temps in the lower 70's at night sometimes (drops to about 66-65 about 30% of the time at night). The temps during the day are usually kept in the mid to high 70's (73-78 F). Baby leaves come in light green and darken over time. The fan leaves are decently dark but can't tell if too dark. It seems the fan leaves and the "trunk" (main-stem) are the only things showing red. The side branches and upper main stem are all nice and green. Please help clear this up for me !

phos def...........warm it up at night.

What temps should I shoot for during the night/day? And how do I treat the phosphorus problem?

80 day..........74 nite. imitate "home" for them. it should unlock. it was a mixture of cold, and a bit high on the ph scale. phos has and acid range. that's my take, and i am but a lowly gardener.

if the red stems (and fan leaf loss, yes......you'll lose those rednecks) continue, after environment adjustment.......trouble.

It's f**king annoying trying to keep the temps straight at night. It gets so damn cold and there is only one small fan driven heater in there. Going to go to straight filtered water (6.0 ph) for 2 weeks and see how well it does. Do you think that's a good idea?

water will not lower your ph. the soil buffers the water. the increased temps will make your 7.0 perfectly fine. the temps i suggested were for the canopy temps.

7.0 and cold......bad
7.0 and warm......fine

Thanks a lot for your help. Keeping the temps straight now. Is it bad if it gets to 77F at night?

This is a bad thing?

Been having the same "purple stem" symptoms. But I know in one area where I am seeing this occur is an open shelf in a bedroom.
So the temperature stays pretty consistent...

Temperature there shouldn't drop below 72/73 and the normal lights-on/mid-day temperature is probably only 75/76 in there.
I figured I might be running too high of a PPM and over-fert or had a deficiency of some sort. Researching it hasn't been 'definitive'
enough for my liking yet... so I'm still not sure...

The other area where I have setup for flowering does get warm from being bottled up with lights on - but at night there is no
heat in that room and it is dropping considerably... like 65 with lights off/night-time and up to 85 with lights-on/mid-day...

Does it sound like I'm in the same camp? P def? I gave them a good drink of CalMag since other threads seemed to indicate
that the purple vein/tint on leaf stems &/or main stem was a Mag deficiency. I'm not using RO water and have a pretty hard
water starting PPM so I figure they're getting plenty calcium...

My PH has been 6.4 to 6.6 in soil under T5 lighting...

Are there any reccomended sites for posting pics - preferably anonymously (i.e. no signup required)?

Sorry for the absence. I am still finding it 100000% hard to keep the temps correct as the area the plant is in gets very cold at night and I am not always around during the day so at times it gets above 80 during the day (like 83-85). I am trying my best but the fucking pH STAYS 7.4 - 7.6 no matter how many times I give the plant 5.5 to 5.0 pH water. I re-potted the plant into a larger container as I heard you should use a 1 gallon/ 1 month of plant life. When I transplanted the plant, I mixed some soil acidifier granuals (followed instructions on the bag) but I can't get my soil pH meter to go that deep in the soil. For as far as it CAN go though, I am getting the 7.4 - 7.6 .
Now I am experiencing what looks like the results of leaf tip burns from being too close to the lights but they are nowhere near close enough to burn so I am guessing I have yet another problem with my nutrients. I am using the same flowering nutes in one feeding then straight pH adjusted water with the next, alternating. I will get pics up here later but a lot of the flowering areas are quite frosty so the plant seems to be doing somewhat okay. On the downside, more and more fan leaf stems are turning red but the leaf still looks healthy and feels healthy. I don't know anymore..... I say fuck growing in the winter is what I say. Like scroglodyte said, low temps w/ 7.0 I am sure I am fucking myself somehow.
I know you can't say much w/o pics but I will get them as soon as I can.

it has been my experience that the red stems are a result of genetics, or phosphorus def. caused by a lack of phos, or ph lockout.