Swimming Pool Sand Going Back Into The Pool

by Cheryl
(New Jersey)

I just changed the sand in the sand filter. The laterals were fine. I had them checked at our local pool store.

I put in 5 bags of sand. Now I have pooling of sand and the bottom of the return valves. I think it is entering the pool during backwashing, but I am not sure.

What could be causing this problem?

Thanks

Thank you for your question Cheryl

There could be a few reasons why you still have sand going back into the pool. You said the laterals are fine so we can rule that out.

Swimming Pool Sand Filters..Inground Maintenance..Above Ground..Care

1. You need to rinse the lines after you backwash. When the pool filtration system is backwashed there's debris that get caught inside the lines.

2. With new sand you're gong to have some dirt and residue which will eventually get filtered out. This is normal and shouldn't be a concern.

3. If the sand media is going back into the swimming pool each and every time you backwash and the above is covered, it might be your multi-port valve. Have that checked and replaced if needed.

4.Be sure your swimming pool sand is at the right level. Check your owner's manual on what the right level is for the sand.

Swimming Pool Sand Filter Problems..Troubleshooting..Maintenance..

Hope this helps

All the best

Robert