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Filteration throwing sand back to the pool - Pool & Spa

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Please check the return from the filter to the pool. It is just as likely that there is a root or other crack in that line that is the source of the sand. Otherwise you need to repair or replace the bottom grid in your sand filter which is not hard but follow ALL instructions when doing so.

Posted on Dec 13, 2016


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When to replace sand filter medium

This is sort of a two-fold answer, as I am not exactly certain if you are referring to replacing the sand filter media itself or the sand.

Most manufacturers will tell you that the sand filter media itself is a permanent media filter. The only reason to throw the filter away would be after the sand calcifies into a solid block of concrete. The industry has spent 40 years telling the professional industry that sand is forever. Sand media is forever and you never have to change it.

However... this is what Hayward Pools is telling their customers:

On average, sand should be replaced every 3-5 years. The jagged edges of the sand wear down and become smooth as the sand ages. When this happens the sand can no longer trap debris particles and dirt can pass through the sand and back into the pool. As the sand ages, it may start to clump and the water flow can form channels in the sand, allowing the debris to pass through.

I have also talked with several others who believe what Hayward is saying, that basically every 3-5 years it should be changed. We have a strong belief in what Hayward says.

Hope that helps.

Bath & Spa Parts Online

Aug 07, 2016 | Pool & Spa

1 Answer

I am not getting a strong, even flow into the pool from the return. What should I do?

clean/replace your filter if its cartridge or the media if its DE or sand. DE and sand arent good forever. check all hoses and skimmer for blocks. also look for holes in the hoses. A small hole will draw air in and throw everything off.

Jun 09, 2015 | Pool & Spa

1 Answer

Pool will not back flush,low pressure

did you remove old sand did you get sand down standpipe

Jun 02, 2013 | Hayward Pool & Spa

1 Answer

How do i connect a salt water system to the pool

if you use a salt system in an above ground pool, the steel frame work will last less than 2 years before it rusts out
talk this over with the pool experts first and then have them help you with the system needed

Oct 25, 2017 | Intex Automatic Salt Water System for ...

1 Answer

My Hayward sand filter is pumping sand back into pool

Normally when I run into a problem with this type of filter like the one you described there is a problem with the pick ups in the bottom of the filter unit. If you did several back flushes and now when you set it back to pump it is essentially back flushing back into the pool the problem is in your controller and it is not closing off like it is supposed to. as far as how much sand to put back int he filter I don't have that information as it is specific to the pump/filter size. A pool supply center would most likely be able to answer that question when you purchase your sand. That filter sand is not the same as sand box sand and should only be purchased from a pool supply center. The same supply center that you get your filter sand from would also be able to advise on the valve problem.

Nov 27, 2011 | Hayward SAND FILTER, PRO SERIES

1 Answer

I just finished cleaning my pool when I noticed debris around the area where my inground pool jets are. So I backwashed and vacuum that area. However, once in filter mode I noticed sand at the bottom of...

When sand comes back from the filter, that means that the device inside the filter that keeps the sand in has broken. In order to replace the item, all of the sand must be removed and the tubes must be removed and new ones installed. Go to your local pool supply house with your filter information and they can show you how to remove your old units and they will sell you new ones. You only have to replace the ones that are broken.


Aug 12, 2011 | Hayward SAND FILTER, PRO SERIES

1 Answer

I have had my pool up since April, and it has been working fine. On Sunday, I vaccumed pool, and when I turned pump back on, it threw dirty water into pool, and now it throws sand into pool. We took out...

Is there an air ejection tube in your filter? My guess is you do and the little tube is not sticking up onto the top, rather, the little tube is in the sand and it is vacuming the sand into the return water flow due to the "venturi effect".

Check it out and let me know what you find.

Thanks for your question @

Aug 03, 2011 | Intex 2100 Gph 95 Hp Sand Filter Pump With...

1 Answer

When i turn y pup on, the filter almost seems to

you have a problem with top valve on filter check to see if sprocket is not seated right you have to remove handle assembly to see sprocket

Jul 06, 2009 | Hayward SAND FILTER, PRO SERIES

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