Best way to heat a room

Joncoh101

Joncoh101

Well-Known Member
Hey guys so its getting to winter here where im from and getting super cold at night and the day, my plants are showing the signs of stress. I re potted them into fabric pots, as well as gotten more fans, however someone brought it to my attention that the cold is a big problem and that when plants get below 16 degrees Celsius which is around 60 F they start to suffer. According to my hygrometer, the min temps are 15.8 Celsius, with lights off.

So what im thinking is getting one of those Delonghi oil heaters with a thermostat option, so that i can just keep the room at around 20 degrees Celsius which is around 68F to prevent large fluctuations, without having a massive electricity bill, allowing the unit to shut itself on and off to keep the temps at the right zone

I am open to suggestions, i want to try and keep the power efficiency high as possible, i have the grow tent in my study, with an extractor pipe hanging out the window so i unfortunately have to have that window open for the pipe to stick out. I have insulating curtains over the window and pipe to try minimize the cold air coming in
 
A friend used to use the oil heater with a plug thermostat but I've heard of underfloor heating mats in the past also. The other thing is slowing the extraction if you can, it's always bothered me using heaters and then sucking it out with the light heat also, but smell is the concern also.
 
Joncoh101 said:
Hey guys so its getting to winter here where im from and getting super cold at night and the day, my plants are showing the signs of stress. I re potted them into fabric pots, as well as gotten more fans, however someone brought it to my attention that the cold is a big problem and that when plants get below 16 degrees Celsius which is around 60 F they start to suffer. According to my hygrometer, the min temps are 15.8 Celsius, with lights off.

So what im thinking is getting one of those Delonghi oil heaters with a thermostat option, so that i can just keep the room at around 20 degrees Celsius which is around 68F to prevent large fluctuations, without having a massive electricity bill, allowing the unit to shut itself on and off to keep the temps at the right zone

I am open to suggestions, i want to try and keep the power efficiency high as possible, i have the grow tent in my study, with an extractor pipe hanging out the window so i unfortunately have to have that window open for the pipe to stick out. I have insulating curtains over the window and pipe to try minimize the cold air coming in
Click to expand...

What size tent and what size light?

If it's that cold and your set-up isn't huge you may just want to scrub and recirculate the air in the room instead of venting it outside.
 
It's a 3x3, maybe I shouldn't vent, I duno lol here's some pics. I'll add that yesterday I put them in the fabric pots as I thought it could have been a root bound problem
 

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Most of the stems towards the apex of the plants were quite soft and wilted, and the leaves were yellowing and dying off, with brownish spots on them. They were fine and then started doing this, so my guess is its a temperature issue, im getting a 50cm box fan tomorow for more air flow. But i think i may need a heater, its super cold here in cape town, with snowfall a few 100km from us
 
More background info, im using a complete cannabis soil mix and only water them, no nutes added at all. Thats also why i put them in fabric pots to help with aeration. Humidity sitting between 60 and 68% temps however are now sitting 15.8 low and 18 Celsius high
 
As @youraveragehorticulturist stated, you could close the window, vent into the same room the tent is in, and draw air from other areas of the house instead of outside. If you've got a good carbon filter and fan, odor shouldn't be an issue.

The basement I grow in goes down to 50F, and averages at 52F all winter here. I use some heat from my 24/0 veg tents to warm the flower tents at lights-off, and can keep them between 56-58F. During the cold stretch of winter, I remove my ventilation from going to outside, to recirculating inside.

The winter temperature at lights-off does slow growth a bit, but when lights come on, I provide above-room-temperature nutrient mix to warm up the root zone for the plant's day.
 
My tents in an unheated garage. I exhaust back into the garage when it cold. I also put an oil heater in the tent if I need to. When it's freezing outside I can keep the tent in the mid 60F while the garage is much lower.

floor5.jpg
 
Nice man, this just seems weird, maybe my plants were root bound in the last plastic pots, as well as lack of airflow? Will probably take a few days for them to bounce back? Damn man, never thought i would run into so many issues sigh, such a ball ache man
 
Joncoh101 said:
Nice man, this just seems weird, maybe my plants were root bound in the last plastic pots, as well as lack of airflow? Will probably take a few days for them to bounce back? Damn man, never thought i would run into so many issues sigh, such a ball ache man
Click to expand...
experience will only make you a better grower
 
Very true, just weird as i have mates that are growing in a tent like a few km from my house and theirs are fine lol. My inline extractor fan has 3 settings it was on the medium one, iv turned it down to the first and slowest one, so lets see how the plants fare, my massive box fan arrives tomorow, hopefully some airflow along with the smart pots will do its job
 
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