[zhasan]

Originally Posted by Reef Pilot

During the winter, instead of keeping rodi water on hand, why not produce the water just before you do the water change? I do that all the time anyways, as it only takes 1 day to produce enough rodi water for a water change. And just keep a bucket in the house, enough for evaporation replenishment.

I assume your rodi must be in the house, as no way it could work in -30.

I thought of that.. but I fear the time when I need to do a sudden water change. My RODI takes forever to produce too..

Originally Posted by SoloSK71

Couple of options.

1) A large enough volume with sufficient motion may not freeze. You would have to do the calculations to double check.

2) Build an insulated "mini-shed" around the storage containers and combine it with the pump and you will need a lot less energy. Again, need to do some calculations to make sure.

3) The "mini-shed" plus a heater on a timer, just enough to keep from freezing.

All of this and you are still going to have to do a lot to heat the water up for any significant water change or top off.

Charles

Thanks Charles. Agree with all your points. Have considered building an insulated closet in the garage.