Hayward pool pump question.

[Scrapple]

When I first turn my pump on if flows like a champ for an hour or two. After that time the flow slows to a what seems like a trickle. The pump is still primed, I checked. Is this because I have a two stage pump?

[Watermom]

Give details about model of your pump and size. Also, type of filter and size of that as well.

[Scrapple]

Pump is a Hayward Power-Flo LX model SP150Z1XBC, 1 HP, 60 GPM
Sand filter is a Hayward Pro Series S166T1542S, I believe its 18"

[Scrapple]

Correction: pump is a Power-Flo, not Pro-Flo.

[Scrapple]

Figured it out. Needed to backwash and rinse again.