[barremic]

Hi

Has anyone tried to make one of these environmentally friendly head sinks for their green house.

I purchased a green house during the winter, and we are hoping to start preping a base to put it in when the weather calms a bit.

But i would like to try to heat the green house or insulate it well during winter.

I havent been able to find many good starter books on the subject.

Has anyone any ideas

thanks