What EMT_Cop says is right, the line is for the external water level only. For the inner water level, it should be adjusted to the base of the riser neck in the collection cup. This can be easily done by adjusting the outlet pipe's valve. However, if your pumo is rightly sized, there's not much fiddling to be done. If you find that you need to close off the valve more then 30%, your pump is already under-sized.
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Originally Posted by skvella
I just bought a Weipro 2013 skimmer and its been running for about 5 days without any sign of foam production whatsoever. On the skimmer there is a mark which says KEEP WATER LEVEL. I set the air/water level at this mark. Is it the correct way as the mark seems to be too low down?
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