Can somebody explain this please?.
If we assume that the tank has dirty water and the skimmer sump has clean water, the higher the turnover through that sump means that dirty tank water is continually supplied to the skimmer. The skimmer would still only draw what it needs, it would just be dirtier water..... Which would make it more efficient, surely?....
If the flow through the sump was slower, wouldn't the skimmer just be re-skimming some of the skimmed water again?....
Thanks
Mo
There could be a misunderstanding here between skimmer and sump flow.
I took a different route having my Deltec 2560 skimmer gravity fed.
Around 80% of my 660 gallon or 2500 litre an hour sump flow goes directly through the skimmer. The rest is skimmed from the surface.
Not many know this but as you increase the water flow through your skimmer the more air gets pulled in there.
Of course there is a sweet spot to find where the skimmer is the most effective.
If there is to much flow bubbles will have a hard time rising up the skimmers neck and exit at the output instead.
Put a filter sock on your skimmers output and monitor the detritus that accumulates.
That can give an indication on how clean the water is that exits the skimmer.
This is not conclusive since very slow flow will leave the cleanest sock.
When I think of it, a better way would be to try different skimmer flow for a few days and measure the gunk in the cup.
The most gunk in a given time has to be close to the best setting.
I think it's better to have good flow between the two for the reasons Mo mentions.
