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Terracotta pot heating

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Any done this type of heating in there greenhouse does it work wit the terracotta pot and candle
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It does work Jason. Very effective and relatively cheap considering the other options.
Where could I get tea lights that burn for 8 hours dave .
Amazon sells some
What size glasshouse ?.
Philippa does it bring temperature up , I got some tea lights today 8 hour ones you can get 12 hour ones but only seen them on ebay .
No one has responded what size of glasshouse will the candles lift sufficient temperature to safely keep tender plants in. ?.
I think Dave is the only one who has actually tried this so far cornelly.
I saw this on you tube, plenty of videos there that may have the answer for you.
For those looking for candles
Asda large tealights 10 for £2 approx 9hrs burning time.
Edit....Sorry phillipa, you too.
four candles or fork 'andles?
I tried this in my 'growhouse' (4'0"x2'0" glass & aluminium) in December but it failed to keep the temp about zero even with insulation round the glass. OH thought I would burn the greenhouse down
I gave up due to the condensation and the fact that I didn't have anything particularly tender.
I think it would work in larger greenhouse but might take a few candles.
Wouldn't do for my 13 x 10 x 10 wooden glasshouse, I will stay with spun fleece over temder plants placed on the floor, or on polystyrene trays.