Is Miracle-Gro safe for my plants?

[Boss]

If I dont heat mine, low temps are 62f and highs are 86 with lights on, the plant in that photo is 12" tall. Oh humidity is 24 to 45%

[shaggie-420]

Black i live in co to and have red/purple stems. it could be from the temp but not necessarily some strands have red/purple colors in their genetics naturally it sounds like your on the right track!

[Boss]

Oh yes, you are correct Shag, but cold temps are a lot more common then red strains I think :-)

[BlackLab]

Shag Do you find that your plants take longer to grow in our altitude, then in other places because of the cold?
I've included an updated photo of 1 of my biggest plants. She is on week 4.

[shaggie-420]

it all depends on the conditions, if its to cold that can slow them same for the other extreme yours looks good for 4 weeks to me, but i am new to indoor ive always grown out door and payed little attention to them mostly just watered. there are other things that can slow growth like ph lock over water etc but it dosent look like any of those are a problem. what are you useing for light? how much watts (lumens if your useing Cfls)?
remember if your useing Cfls you want at least 1000 lumen per sq foot more is better as always

[shaggie-420]

yah i agree boss temp is way more common than red in the strand especially in colorado lol

when my plant sprouted it was red stemed for most of the start and than went to green and now they are turning dark purple and the leaves are begining to take it on too!

ive read that some times red stems can be a sign of a def. any one know if this is true?

[Boss]

Yes, calcium and somthing else.

[RooRman]

Originally Posted by BlackLab

Shag Do you find that your plants take longer to grow in our altitude, then in other places because of the cold?...

Indica plants have their orgins in Asia and are adept to growing at higher altitudes as well as being more tolerent of the cold. As such, Indica dom. strains are a better choice for growing in this type of enviorment.

[BlackLab]

I wasn't aware of that strain, from Asia huh? It does really like the climate here. 6500ft. 70 Day - 60 Night. I'm growing 24/0 under a 400 watt Metal Halide, water drip with full strength Fox Farm nute's twice a day for 10 min a day from a resivior. I added a fish bubbler to add some O2 to the H2O. Since seeds are so hard to find and very expensive here, out of five growing I'm hoping for one male and 4 female's so I'll have some really good seeds, plus I'll get some bud as well.

[Racefan]

Originally Posted by Boss

Yes, calcium and somthing else.

The cold locks out the phosphorus which results in the red stems.

[Be IRIE]

I am in Co too, and my leaf steams are also turning red... My night temp inside is 68-69 deg. The lights on temp is high 70's low 80's.. Comparing them age wise to others on here I have not seen anything that would hint that they are slower growing.. I also have not had any problems with my miracle grow plants, they are doing just as well as the FF ones...So far..

[Boss]

The stems will be a non-issue I think. No worries.