Sand Filter Acting Strange

[Poconos]

I've been thinking of this one too. When you kill the pump do you hear any gurgling like there may be trapped air somewhere? I don't understand how it would happen but if you get any air bubbling up from the bottom of the filter that would churn up the surface but I can't see it taking a few hours to settle and block again. Also sounds crazy but if you have a recirculate mode, try that and see if the symptom occurs. That would rule out all but the filter if it does not happen. Truly an odd one.
Al

[kevincad]

I've been thinking of this one too. When you kill the pump do you hear any gurgling like there may be trapped air somewhere? I don't understand how it would happen but if you get any air bubbling up from the bottom of the filter that would churn up the surface but I can't see it taking a few hours to settle and block again. Also sounds crazy but if you have a recirculate mode, try that and see if the symptom occurs. That would rule out all but the filter if it does not happen. Truly an odd one.
Al

I'll do that, thanks.