Originally Posted by Wild Duk
How do you control the temp. with them. Especially in the summer months?
Same methods you use with the plastic carboys (at least that's what I've seen done).
You can make a fermentation chamber from a free or dirt cheap fridge and a little modifications.
Plenty of them are here in in these forums.
I helped someone make a fermentation chamber with an air conditioner and a temperature controller (I think we used a Johnson Controls controller). That was a pretty good sized chamber. We were able to put six carboys on two shelves.
Tons of insulation, but it worked and continued to work "on the cheap". In the winter months, we did the reverse with a heater (same temp controls).
But, this is just a couple of options.