Quote Originally Posted by Web Goblin View Post
I will probably add some anti-freeze when winter arrives. It was baltic up here last year ( had about 150mm thick ice on top of my pond ) and my workshop is only heated when I'm in it. I have some good anti-freeze somewhere that doesnt attack copper or aluminium or nylon/plastic tubing.

Ian
Use Distilled water with a Good quality anti freeze and you wont have any trouble. It was -12 in my workshop last year and my 25ltr barrel of water didn't feeze and it's sat directly on the concrete floor.
Thou must say I pritty much used it every day (YES worked thru it. .Tough breed up here.!!! ) so the water was never left undisturbed for long periods, So if your not going to use it for weeks on end then I'd recommend you drain the system just in case we have another artic winter. . . . . . Oh and the water is the same original water I started with 3+ years ago with no nasty's or funny smells, the fact It's distilled water and it's a sealed dark container that no direct sun light can get to helps (No windows in my shop).