How many gallons of fluctuation are you getting between
pump on, and pump off?
What's the size of your tank?

Wayne Sallee


TekCat wrote:
the return area of the sump is only 3 gallons, so it gets "dry" fast. I
could try to make bigger sump, or ... maybe making new teeth in overflow
skimming box could do the trick?



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

Get a biger sump, and/or improve your overflow.

Your water level in the sump will drop when the pump is running, and go
back up when the pump is not. Does the tank come close to overflowing, or
does the tank water level run at a normal level?

Wayne Sallee


Charles Spitzer wrote:

"TekCat" wrote in message
...


I have a Quietflow 600 hang on overflow box... supposedly it should take
care of 600GPh. Also I have pump that is pumping from sump to the tank,
it
is Dolphin DP 560. With 2' head loss the chart says it would output
460GPH.
So far so good, but the overflow doesn't seem to take 460gph quite well,
I
get my sump's return area empty very quickly, this means one thing that
the
pump pumps faster than overflow can handle. Any thoughts on how to solve
this?


throttle the output side of the pump, or get another/bigger overflow.