Seedlings in greenhouse ?

i was following getaways thread on his greenhouse grow.. But has a specific question about seedlings and temps.
I have a 30x48 semi gable I'm wanting to start early so I sectioned off a 10x10 area for some extra greenhouse plastic I had. I I have 2 four foot,6 bulb T5, 2 60x20 heat mats and 2 1,000 watt space heaters...
I can keep the overnight temp in that area in the low to mid 50's .
I just popped 90 seeds and they have just emerged from the starter soil and in solos. Should I keep them indoors for a while or are my overnight temps OK for babies?

petert said:

i was following getaways thread on his greenhouse grow.. But has a specific question about seedlings and temps.
I have a 30x48 semi gable I'm wanting to start early so I sectioned off a 10x10 area for some extra greenhouse plastic I had. I I have 2 four foot,6 bulb T5, 2 60x20 heat mats and 2 1,000 watt space heaters...
I can keep the overnight temp in that area in the low to mid 50's .
I just popped 90 seeds and they have just emerged from the starter soil and in solos. Should I keep them indoors for a while or are my overnight temps OK for babies?

Click to expand...

50 is OK but i reccomend 60* for cannabis . the lower temps affect them but thats not too bad ...
i run a 30 x 12 home attached greenhouse and man they like 70* temps night and day ALOT!

70 is no problem during the day...I've got a twin 30 amp breaker running to the greenhouse... Maybe I beef up the heat during the night time.

You really need higher than 60, around 68-72 preferably BUT good news is seedling you can just DOME EM! Put a germination mat underneath them and/or slide some styrofoam underneath. If its really that big of a deal, start em in plug in styro cups for even more added insulation. Once the sun comes out after winter you can proceed as normal.

I'd keep them inside for a couple weeks unless space is really an issue. Those electric heaters are expensive to run.

You think the heat mats will heat enough to keep the medium in the solo cups warm?