Pszemol wrote:

What temperature drops have you observed and how fast ?

This was years ago, but, IIRC, the outside temperature was in the single digits.
The drop of temperature in the house went from the low 70s to the low 50s or
high 40s in the space of 45 minutes. My tank was either 100 gallons or 125 (I
upgraded during that period). The temperature drop was about 6 degrees, maybe more.

How long this blackout usually lasted ?

They were selectively cutting power to neighborhoods for 45 minute stretches. I
don't remember the details anymore, but they had pulled certain plants off line
to do yearly maintenance (electricity demands are typically less during the
winter), then we had a cold snap. Possibly something else also went wrong.

George Patterson
Coffee is only a way of stealing time that should by rights belong to
your slightly older self.