Help with temps

Hi guys, I'm just about to start my second grown, first ones died, I have a 600 and 400 watt dual spectrum lights 6" fan as outtake 4" as intake pedestal fan and humidifier, temperatures are just too cold when lights are off hitting 7 degrees celcius, I tried a tube heater from my local grow shop and it wasn't powerful enough, so got a cheap fan heater and suspended it from the light rail, but it was hitting 35-40 degrees on minimum setting, I need a cheap fix as I'm already in way over my original budget to get started

All ideas welcome!

Thanks guys P.S it's in my attic, in a standard tent, and I live on a mountain in Wales

veg for 24 hours . thell grow fast as hell, and stay nice and toasty, prob is idk when it gets warm whare you are well you could veg for 3 months and thell prob be 3 or 4 feet tall running 24 hours a day, and flowering will stretch them 7 or 8 feet tall ! youll get 10 plus ounces a plant

Buy a timer for your heater and set it to run 15 min on and 45 off. Your temp humidity meter should tell you your high/low temp so adjust accordingly. Hope this helped

kinddiesel said:

veg for 24 hours . thell grow fast as hell, and stay nice and toasty, prob is idk when it gets warm whare you are well you could veg for 3 months and thell prob be 3 or 4 feet tall running 24 hours a day, and flowering will stretch them 7 or 8 feet tall ! youll get 10 plus ounces a plant

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Lmao, have fun in an attic with a 10 oz plant, lol, i hope you got a big attic for a 8 foot tall plant and room for that light rail and fixture.....maybe though

Ninjabowler said:

Buy a timer for your heater and set it to run 15 min on and 45 off. Your temp humidity meter should tell you your high/low temp so adjust accordingly. Hope this helped

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Tried that mate but the 15 minutes it was on was getting too hot, then when it went off temps dropped big time, I need consistent temps, I've had a few people tell me different optimum temps, so can anyone clarify what they should be? (been told 25 at day and about 16 at night) another said 30 and 22 so I'm not sure

kinddiesel said:

veg for 24 hours . thell grow fast as hell, and stay nice and toasty, prob is idk when it gets warm whare you are well you could veg for 3 months and thell prob be 3 or 4 feet tall running 24 hours a day, and flowering will stretch them 7 or 8 feet tall ! youll get 10 plus ounces a plant

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I don't have the height for that sort of grow wish I did

htid welshy said:

Tried that mate but the 15 minutes it was on was getting too hot, then when it went off temps dropped big time, I need consistent temps, I've had a few people tell me different optimum temps, so can anyone clarify what they should be? (been told 25 at day and about 16 at night) another said 30 and 22 so I'm not sure

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Im in fahrenheit so ill try n convert. 25.5 day and 18at night, thats 78f day and 65f night. Feel free to call me out if im wrong, I dont worry to much about being exact on anything so mine drifts from 83f to 59f, whatever.

htid welshy said:

I don't have the height for that sort of grow wish I did

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Sounds to me like you should be doing sog perpetual harvest every 2 weeks with two lights.