Too cold to grow

pollen205

Well-Known Member
Hy

My temp go below 15 c how can I heat 80x80 grow tent...have 4 diy cob inside and they running preatty cold...

Thinking about 600 w small oil radiator
 

bearded.beaver

Well-Known Member
You could maybe add some old school light bulbs in a lamp just to add a bit of heat. Then you get a little extra light with the heat from the bulb.
 

Rob Roy

Well-Known Member
Veg near, but outside, your primary flowering tent and / or grow and flower autoflowers outside your primary flowering tent.

Any electricity used in the form of a light can be dual purpose, creates heat and supplies light. Use thermometers that record 24 hour hi/low temps and become familiar with your grow room temps both inside and outside your tent when it's cold outside so you'll know when or if you need to add supplemental heat, which of course can be another light.

Fluorescent 4 foot lights are cheap if you're on a budget. Good luck.
 

pollen205

Well-Known Member
Heat mat for terraries ?

I can go from 7 w to 45 w...will this help me...

Or I can go with 1m2 of floor heat foil that is 100w

But terrari 45 w looking good
 

slinkysaurus

Well-Known Member
Are you soil or hydro?

First thing -
In the cold weather, I need an oil fired radiator flat out 24/7 in the grow room. I place this directly behind a fan so as when lights are off, it's blowing warm air about my grow area.

Second thing-
Nutrient heaters in your brain bucket. Do not let your temps drop below 15c for the water nor your grown room.
You'll run into big problems where the plants stall if you can't keep the temps up.

Thirdly - the room your taking air from. Are you taking your inlet from a room or from a window?
If a window, take it from a room instead. And make sure that room is also kept warm. The easiest way to do that is by using a FAN heater from your intake room. This will also keep humidity down during lights off. Oil heater in tent. Fan heater in intake room.

I'm guessing you're in the UK?
 

pollen205

Well-Known Member
Europe...
Soil...
Must buy oil radiator...
Will 600w radiator be ok for 80x80x160 cm grow tent...
And then vent off right ?
If I turn vent on it will only draw cold air again in tent
 

slinkysaurus

Well-Known Member
Europe...
Soil...
Must buy oil radiator...
Will 600w radiator be ok for 80x80x160 cm grow tent...
And then vent off right ?
If I turn vent on it will only draw cold air again in tent
I thought so. Read that post again 1st part and 3rd part. ;)

Leave your intake/outlet fans ON.
Heat your intake room and heat your grow room.
Oil heater will.be fine in the grow room just make sure there is a fan to help circulate the heat.

where are you taking your air from? Outside or a room? If you're pulling it from outside, all your going to do is pull in humidity and cold. Pull it from a warm/dry room, and you'll keep things okay at lights off.
 
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