2 speed pump. High speed puts sand in pool?

I have the pentair Dynamo 2 speed pump (3/4 HP). I run it in low speed 99% of the time, but on certain occasions I need to put it in high speed to circulate quicker. Every time I do this, I get a bunch of sand, from my sand filter, on the pool bottom. Is this a mismatch in filter to pump or what else should I be looking for? My pool is a 24' AG 54" high pool.

By the way...I never get any sand in low speed.

Thanks

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Originally Posted by mjs31

I have the pentair Dynamo 2 speed pump (3/4 HP). I run it in low speed 99% of the time, but on certain occasions I need to put it in high speed to circulate quicker. Every time I do this, I get a bunch of sand, from my sand filter, on the pool bottom. Is this a mismatch in filter to pump or what else should I be looking for? My pool is a 24' AG 54" high pool.

By the way...I never get any sand in low speed.

Thanks

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Sounds like the pump at high speed is just too powerful for your filter. What size is the filter?

Janet

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Originally Posted by aylad

Sounds like the pump at high speed is just too powerful for your filter. What size is the filter?

Janet

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I wish I remembered. It is a waterway that came with the pool. 150lbs of sand I know for sure.