[Greenbuilding] A Solar Hot Tub

[Nick Pine]

"Rob Tom" <ArchiLogic at yahoo.ca> writes:

>... a galvanised steel stock tank filled with a calcium chloride brine 
>solution can likely be expected to rust out

It would have a folded EPDM liner.

> OTOH, four sheets of tempered glass, salvaged from 2 discarded patio door 
> thermal pane IGUs, stood up on end to make a square tube (you're on your 
> own for the base) would make a storage tank that is chemically-inert, 
> corrosion-proof , less costly than a stock tank, easier to insulate and 
> has a smaller footprint physically as well as ecologically...)

Hmmm. A large aquarium. A stock tank that can withstand cow and horse kicks 
may be overkill. Maybe 2 3' diameter x 2' tall tanks with folded EPDM inside 
newspaper inside 10 cent/ft^2 welded-wire fence cylinders, surrounded by 
leaves or peat moss, under the 4'x8'x2" foamboard cover.

Nick