holding tanks and freezing

[Rob Robinson]

Some have used rock salt

On 24/10/06, Gardner Yeaw wrote:
>
> I may stretch the North East season with a trip in early December to
> Washington DC. I have small electric heaters in the cabinets with
> plumbing as well as the rear compartment with the fresh water tank and
> hot water heater. What I am concerned about is the grey and black
> water tanks. Is there a recommended antifreeze that can be used to
> prevent freezing of the liquid that isn't bad for septic systems?
>
> I would expect the temperatures to be above 20 and so I don't need a
> lot, but I don't want the dump valves to freeze up.
>
> Gardner
> 78FC33
>
>
>



--
Rob, Sue & Merlin Robinson
94 WLWB


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