Thanks for the posts. I was trying to get a feel for how
efficient these pumps were. Without test equipment
the "warm or cool" is about a good as we can get.
If we knew how much of the rated wattage was
dissipated as heat circulating the water and how
much was due to inefficiency we might be able to
put to bed an aspect of the in-line vs. tank debate.
They guys who are dead-heading grossly oversized
pumps aren't doing themselves a favor.....more heat
from circulation and inefficiency.
At this point the Eheim 1048 looks as good as it gets
to me. It's quiet and right-sized. In-line of course.