Why Is There Sand At Bottom Of Pool

by Jonathan
(Stephenville, TX)

How could I clean the sand out of the bottom of my above ground pool without having to empty it every time?





Thanks for the question Jonathan

First I need to know why you're getting sand in the pool in the first place. Is sand returning through the returns after back washing? You may need to RINSE or you might have a broken lateral(s). Have you just replaced the sand in the filter?

Is the sand greased up? You may have channeling. Are there uncommon windstorms in your area? Being that I don't have this information I can only guess as to why you're having this problem. The easiest way to get rid of sand is to either manually vacuum the sand or use a pool cleaner such as a Polaris.

Swimming Pool Vacuums

Robot Vacuum Cleaner

Getting sand into the pool is a common problem, but it means that something is not functioning properly. If you could contact me again with a little information I'm sure I can help troubleshoot your issue.

To post a reply, or if you have a similar question, you can see your post on the Q&A page in the "Sand Filter" category.

Swimming Pool Questions and Answers

Check back to this post for answers.

Hope this helps and have a great Summer.

Robert

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Jul 28, 2014
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Filter In Red
by: Anonymous

We've had our above ground pool only 2 months. at first it kept the water really clean, now the water is cloudy and the sand filter gauge is hovering in the red.

What do I do?

Jul 29, 2014
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High PSI Sand Filter
by: Robert

Thanks for the question

There are a few reasons why you may be having a high readings. First is to check the gauge. Turn the system off and see if the needle drops to 0. Then turn the system back on and if the needle jumps up to the same range the gauge is fine. If the needle gets stuck you need to replace it.

Run the pump with the Multi-Port Valve "recirculate" position and see if it makes a difference in the flow rate back to the pool or a difference in the gauge reading. You should see a small difference here.

If you still have the problem, it's not a problem in the filter tank, it might be some kind of blockage in the lines, either the suction or return side.

Here's a video I did on that:

https://www.youtube.com/watch?v=ElMwJmGSIFc

High pressure means that the same amount of water is trying to be pushed through a smaller area which causes a rise in the psi gauge.

Check out those areas above and see if that doesn't help.

If you feel your situation is more complex than this, I do phone consultations for a donation of your choice. It makes things go much faster and many people have found it extremely beneficial, saving them time and money in the long run. All your questions will be answered. I have nothing to sell you so you know I'm not bias.

Pool Consultation

Hope this helps and have a great Summer.

Robert

Jan 18, 2015
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Sand In My Pool
by: Anonymous

I changed the sand today. Is it normal to see some sand in the stairs and at the bottome of the returns?

Thank you




Thanks for the question

Yes it's normal for some sand and debris to go back into the pool right after changing the sand. New pool sand is full of dirt. This dirt will go back into the pool until the sand has a chance to settle. You'll normally see for the next 5 - 7 days.

Barring any broken laterals or standpipes, the sand should start to decrease within that time period.

Jul 20, 2015
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Sand In Pool
by: Anonymous

I have a Aquaview sand filter for our above ground swimming pool and I have changed the sand twice this summer because of the sand going back into the pool and we have replace the lateral line in the filter as well because we thought it was broke but it was not. Now that we have replaced that and the sand it is still putting sand back into my pool. Need help please.




Thanks for the question. Sand filters are pretty straight forward. We can only assume that the laterals are intact and the spider gasket in the Multiport valve is properly working. The next area would be to say that new sand is very dirty. There are smaller particles that the laterals can't handle. This finer dirt will go back into the pool through the returns. This is simply part of having a sand filter. The only thing you can do is keep vacuuming it up. It will eventually settle down.

Next is to check the freeboard. This is the measurement from the top of the sand to the top of the filter. Your owner's manual and the manufacturer will have this information. It's normally around 10" or so but check to be sure. If the sand is low simple add in a couple more inches and you're set.

If you feel your situation is more complex than this, I do phone and/or SKYPE consultations. It makes things go much faster and many people have found it extremely beneficial, saving them time and money in the long run. All your questions will be answered. I have nothing to sell you so you know I'm not bias. If you purchase a personal phone consult you'll get all 3 eBooks for free.

Pool Consultation

Clear Blue Pool eBook

How To Clear Up A Green Pool eBook

Swimming Pool Resources

Robert

Jul 21, 2015
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Sand Going Into Pool Thru Return
by: Anonymous

We changed the sand in our Jacuzzi 190 filter on Friday. We got the old sand out using a shop-vac, pulled the laterals out inspected them (all looked good), put water in the bottom, put the laterals back in and put 3 1/2 50 lb bags of sand bought from our local pool store. We backwashed for approx. 2 mins, rinsed for 2 mins, waited a few minutes and turn to filter and it put a lot of sand back into the pool through the return. We contacted the pool store and they stated this happens from time to time, just try backwashing and rinsing for longer (15-25 min); we have tried this also and we are still getting ALOT of sand through the return. Do you have any ideas on anything else to try to correct this problem?




Thanks for the question. We can assume the laterals, stand pipe, and the spider gasket in the Multiport valve are good. The other option is the new sand. It's very dirty and the smaller particles will go back through the returns. This is normal and will decrease with use. You need to vacuum it up. I would suggest vacuuming to WASTE to speed up the process. Unfortunately this is the nature of the sand filter beast. There's also info. on this page about checking the freeboard as well.

Robert

Jun 27, 2016
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Sand in bottom of pool
by: Jackie

Is it sand or yellow algae? I thought mine was sand. It was algae which looks the same. I used Yellow Out and it took care of the issue.

Jun 09, 2017
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Idea for getting sand out of my pool
by: Anonymous

I have a 22' above ground pool. This year I changed from a cartridge pump to a sand pump. I had about a half bag of sand left over... magically about half of the left over sand found it's way into the bottom of the pool. Could you please send me an idea of what it would take to get it out?




You can either vacuum to filter or waste. Brush the sand to one area of the pool and vacuum. If you vacuum to waste, make sure you top the water off. Waste setting will decrease the water level.

If you have sand going back into the pool during filter mode or vacuuming, you may have a bigger problem with a broken lateral.

Robert

Jul 01, 2017
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Sand in pool
by: tammy

I am getting sand back into pool after vacuuming it, I have put a catch cloth in skimmer basket and have filled 3 of them with sand. I rince for 12 minutes but as soon as I turn pump back on sand returns thru the jets. Help.

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Sand Flows Out Into Pool

by Michael
(South Africa)

We are experiencing problems with our pool since replacing the sand. Our old sand was really dirty so we decided to replace it. Ever since, when our pool is on normal filter mode a lot of sand is poured into the pool.

We have checked that the switch from backwash (etc.) to filter works properly and that everything is sealed properly. Still, the sand just keeps pouring out by the pool inlet from the pump.

Please help

Regards,

Michael




New sand will go back into the pool. The finer particles will bypass the laterals. The only thing you can do vacuum to WASTE until it settles and the filter rids itself of the smaller particles. Check the freeboard and top off the sand if needed.

Next is the broken lateral. If the filter wasn't filled 1/2 - 3/4 with water the new sand may have broken a lateral.

Last is the multiport valve. Check the spider gasket to be sure it's working and intact. Replace if needed.

Robert

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Sand In Pool

by Jerry
(London, On Canada)

My Hayward sand filter is only 3yrs old. When I opened it this yr I noticed sand in the bottom of my pool after one week of clear water. It started after my second backwash that week. After reading all your blogs, I presume it's a broken lateral ? How do I test which lateral to replace?




Hi Jerry. You're going to need to remove the sand out of the filter. This can be accomplished by scooping it out by hand or using a Shop Vac, or a combination of the two. Once the sand is removed you'll be able to inspect the laterals and standpipe. It might be immediately evident which one is broken.

Unscrew the bottom drain and rinse off the laterals to remove the residual sand. This makes the job a little easier.

Unscrew the lateral and replace it. It's fairly simple but may take a few minutes to do.

Robert

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