Q&A for How to Select the Correct Filter Size for Your Swimming Pool

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What size pool is a Haywood DE 2400 filter used for?

Community Answer

That filter has been discounted and replaced with DE 2420, which is a 24 square foot filter size or 48 GPM or 2,880 GPH rated pool.

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Question

I have a circular pool 5.4m and 1.12m deep. It is heated to 35 C, so I would like to run the pump 24 hours. Which size filter do I need?

Community Answer

First, you might want to reconsider running a pump 24 hours. It's a waste of energy. As for filters, try a 24-inch Sand Filter, or 100 sq ft. Cartridge Filter, or 24-inch D.E Filter.

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Question

How often do I need to change the sand?

Community Answer

When you notice your backwash more than necessary, you should change it. However, if you notice sand in your pool at the outlets, then it is not the sand. You have a broken lateral, and must remove the sand to repair; so you might as well replace sand then as well.

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Question

If the purchase receipt describes my filter as 19", what dimension is that?

Community Answer

This is the diameter of the filter tank, typically (if it's a sand filter). To get the surface area for a filter this size, you would want to use the formula for the area of a circle with a radius of 19" divided by 2. In this case the surface area is approx. 1.24 ft^2.

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