On Tue, 15 Mar 2011 06:09:16 -0700, jamesgangnc wrote:
Set the first one a little lower than the second. This gives you really
rapid recovery if you use the entire first tank. Also evens out the
running time and reduces the maintain temp costs.

This seems reasonable.

I have both set around 130 degrees at the moment.

I'm not sure which you mean by the 'first' and 'second'. I'll assume the
first is the closest to the cold water supply and the second is next in
line.

Are you suggesting something like 100 degrees for the first tank and 130
for the second tank?

Bear in mind there is a little black hot-water recirculating pump, which
I don't quite understand but it runs a lot (I can hear the humming).