Greenhouse: Heating a large GH ?, 0 by georgiagarden3

georgiagarden3 wrote:
We have a Large (GardenMart) GH. 120(L)x90(W)x14(H)
That has the white poly top and sliding sidedoor panels.
We need to heat this on average of 12 to 14 times in the winter our winters are fairly mild with only a few frosts and a few freezings.What would be the best way to heat the GH?We have Tender Tropicals and a Water pond in it.Most of the Plants are in the ground or in pots in the ground.We have wood chips around the Plants as mulch and gravel around the Cactus.Plus we are over wintering alot in pots.
Thank you for any help you can be.
Pheadra