loss of pressure !?!?!

[bsbrega]

Not sure of pump rating. . .But not seeing air bubbles that you describe. Return puts out quite a lot of volume at good pressure, but inexplicably, (or so it seems) the pressure drops to nealry nil and vacuum plate drifts off its place on the skimmer. Then I need to backwash again. . .and on and on like that. . .

[geordie]

Can you post a picture of your pump and filter? Does your pump not have the hp posted on it?

There are a variety of reasons you could be losing pressure. You may have a partial clog somewhere, your filter may be too small, your pump may be too weak (normally pumps are stronger than necessary so I'm not banking on that one), you could be sucking air from somewhere, or you might just have your pump filter basket turned so it is blocking flow into the filter (i did that this spring and had a resulting loss of pressure).

Those are the easy ones I can think of. More information may help us give you suggestions.

[bsbrega]

As of yesterday, it's now a non-issue! My pump died. I figure that must have been the reason for the loss of pressure all along. I replaced the sand filter with a cartridge filter, and got a new pump and everything seems to be OK. Thanks for your replies!