Heater recommendation?

So for undisclosed reasons, this winter i am limited to growing in a shed. Its not a proper grow, just a one plant breeding project to hopefully have a few hundred auto seeds ready for outdoor 2k16.

400w HPS
4x4 tent

Light from the HPS makes the temp in the tent have a high of 72-78 in the daytime, but at night time temps are getting to the 40s/50s, also my humidty is slighly low. Would anyone be able to recommend a heater that can turn on when temperatures get too low, and shut off when they get too high? Also a humdifier recommendation would also be appreciated as the heater would dry out the air even further.

I've seen many people using them oil filled rads I'm sure you could hook it up to a timer for when it's cold...

THCBrain said:

I've seen many people using them oil filled rads I'm sure you could hook it up to a timer for when it's cold...

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They might be small enough to fit in the tent, but hooking it up to a timer would be tricky considering outdoor temperatures vary by day so im looking for something that would turn on say anything under 60F, it would heat up to past 60, and then shut off again until it drops below 60.

Maybe a temperature based, day/night fan speed controller will get the job done

I know what you need a reptile thermostat when the gauge gets cold it kicks the (in this case) light on so it gets warmer there just a simple plug and play.

It's called a komodo pulse thermostat

On my phone so can't easily link, but google 'stc1000' it is a small thermostat controlled power supply for about £14 . Set temp you want it to turn on, it will then turn off a couple of degrees higher. Can also turn on a fan or aircon when temp gets too high. Dead simple to wire up, loads of 'how to's' online, used by home brew beermakers.
I use one to turn on a 700w oil filled rad in my stealth garage cabinet grow. Only 7 sq ft so temps alter rapidly, but it works perfectly.

For some reason I cant edit my post. I was going to add it gas a 1 metre long sensor so you can have it outside tent to see temps during lights out. Also means you can put probe at canopy rather than sensing what the plug temp is

Build one - HomeDepot - $16.67 + Tax

http://www.homedepot.com/p/Dimplex-Single-Pole-Wall-Mount-Thermostat-Kit-TS321W/203568932
http://www.homedepot.com/p/HDX-12-ft-16-2-Cube-Tap-Extension-Cord-HD-145-009/100672806
http://www.homedepot.com/p/5837112-25R/202590841

I have one of the electric oil filled radiator heaters plugged into a LUX WIN 100. Works super.

http://www.amazon.com/gp/aw/d/B000E7NYY8/ref=mp_s_a_1_3?qid=1449446943&sr=8-3&pi=SY200_QL40&keywords=lux+thermostat&dpPl=1&dpID=313Eh1W4f3L&ref=plSrch

Thank you all for the recommendations, always good to have different option to fit my specific situation. Currently looking into

http://www.amazon.com/gp/product/B000E7NYY8?psc=1&redirect=true&ref_=ox_sc_act_title_1&smid=ATVPDKIKX0DER
and a heat mat specifically for the roots. Hopefully the thermostat can turn the heater on, and hopefully the heater doesn't overheat the tent

The oil filled heaters hold and dissipate heat for quite a long time after being off. Great for sheds and outside. But for a tent, use a ceramic fan-forced heater. Under 50 bucks

I have a delonghi oil filled radiator with the built in thermostat. It was about $80 at Lowes.

Regardless of the heater type, you will have an easier battle against extremes of you heat the shed instead of just the tent. Obviously it will be a less efficient use of electricity, but still justifiable in my opinion, as long as it's not a house-sized shed. As others have already recommended, have your thermostat inside the tent at canopy level. Having the heater outside also allows for better retention of your humidity.

there is a heater called my little buddy that will keep temps high enough at night,if you can,run lights during dark hours(outside). the heater works on propane giving the advatage of co2.The bad,it also raises the humidity.

texasjack said:

I have a delonghi oil filled radiator with the built in thermostat. It was about $80 at Lowes.

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I'm looking into one of these heaters for my grow shed. Did you see much of a jump in your electric bill?

budLIFE60 said:

I'm looking into one of these heaters for my grow shed. Did you see much of a jump in your electric bill?

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Depends how high you set the thermostat. But its more efficient than other types in my opinion

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budLIFE60 said:

I'm looking into one of these heaters for my grow shed. Did you see much of a jump in your electric bill?

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Still too new. Will let you know.

Run your light overnight so it heats when temperatures are coldest. Lights off during the warmest part of daytime. Then any heater will be used for a minimum amount of time to maintain temps.

Might try a couple of blow dryers if it's a small shed...

ttystikk said:

Run your light overnight so it heats when temperatures are coldest. Lights off during the warmest part of daytime. Then any heater will be used for a minimum amount of time to maintain temps.

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The key is finding a way to get the heater to turn on at the proper temperature and not overheat the tent. Having a heater within the tent seems to not be recommended. Bought some equipment and I'll be making some adjustments this weekend.

BBbubblegum said:

The key is finding a way to get the heater to turn on at the proper temperature and not overheat the tent. Having a heater within the tent seems to not be recommended. Bought some equipment and I'll be making some adjustments this weekend.

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Active airflow plus having the heater kick on only when the temperature is low and it shouldn't be a problem.

texasjack said:

Still too new. Will let you know.

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Cool let me know. It's between this heater or a panel heater right now.