Well, fall is here and winter is most certainly on its way. Seems to me that unless an NFT system (tube garden) is in a perfectly controlled environment they are going to transfer so much heat as to make them a total waste of power .... Should I be using some sort of insulation on the pipes? I have a couple of aquaponic beds on flood and drain cycles, where it looks like the pebbles and pellets are acting as a thermal bank ... and I can put mini greenhouse domes over those beds to trap the heat a little more but I just don't see it working out for the NFT system this winter at any rate.
I suspect that I'll just end up taking it out and replacing it with another flood and drain bed filled with pea gravel, but I would love to hear what other greenhouse system gardeners have to say.
So I ended up taking those out but still haven't gotten around to building that extra bed yet. I'm thinking it might be better to wait for spring with that project.
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