Most don't, some do.

It can react harmfully with (element, forget, too lazy to
look it up), and so the salt manufactures actualy leave
that element out.

Wayne Sallee
Wayne's Pets



Timcat wrote:
What about ozone? I get the impression most reefers don't really care for
it, either.

Tim

"Wayne Sallee" wrote in message
link.net...

Timcat wrote:

Do you feel it is also not needed for "emergencies"?

I would not even use one for emergancies.

Wayne Sallee