Got mail?

"Marc Levenson" wrote in message
...
Hi Jim,

Your display tank's water level is set by the draining overflow box. That
water
level is maintained all the time, no matter what.

Your sump's water level will be the one that fluctuates as evaporation
occurs.
If you use baffles in your sump, the water level will stay constant in all
those
zones EXCEPT for the return zone where your return pump is located. This is
the
area that will continue to lower over time.

What you want to do is this. Turn off your return pump. Allow all the
water
that drains down to do so. If there is room for more water, add more to
your
sump until you feel it is about to exceed your comfort level. Now turn on
your
return pump again. When the sump's water level is stabilized, mark your
sump
with a piece of tape or an indelible marker (Marks-A-Lot) at the water line.

Now whenever the sump gets low, you can safely add water, but no higher than
that line. The reason to not cross that line is because if you do and the
power
goes out for some reason, your sump *will* overflow.

Marc


Jim Reynolds wrote:

Sometimes the simple things stump me and I am hoping this is one of those
cases. I am installing
a sump and would like to install a top off system. However, I am not sure
how adding water to the sump will
increase the water in the tank. If I have constant flow of water from
the
tank through the sump how will a
top off system work. My common sense, which I am hoping is wrong, tells
me
that tank evaporation will not
impact the sump level until it goes below the water returns in the tank (
drilled tank ). Also water evaporation in the
sump will not impact the tank level because the water flow is constant.
I
must be missing something here.
Can someone explain how a top off system works or point me to a site that
explains the mechanics of the system ?

Thanks,
Jim Reynolds

--
Personal Page: http://www.sparklingfloorservice.com/oanda/index.html
Business Page: http://www.sparklingfloorservice.com
Marine Hobbyist: http://www.melevsreef.com