Possible sand in pool

ducttapekz

Member
Jul 10, 2021
5
Nashvilel, TN
Pool Size
30000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-15)
I ran my robot vacuum and it looked like it was full of sand:
IMG_3591.jpg
Is this sand? What should I check next?

I have an S310S Hayward filter. It takes about 500 pounds of sand so I'm kind of dreading changing the sand and lateral.

30k gal, IG vinyl, Jandy 1.65HP VS pump, sand filter, Hayward SWG, Dolphin Nautilus CC Plus cleaner
 

Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2014
37,540
Texas, San Antonio/Marion, South-Central Area
Pool Size
17888
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
Look below your return jets. There should be piles of sand in that area. Or some people try to rig-up a sock or nylon around a return jet to catch it that way. But I suspect your biggest fear might be correct. You might need to dive down into that filter to inspect the laterals/hub assembly. :(
 
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ducttapekz

Member
Jul 10, 2021
5
Nashvilel, TN
Pool Size
30000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-15)
Does anyone have experience changing the lateral assembly on a Hayward S310S? I’ve watched some Youtube videos on changing laterals but they are all ones with a long pipe from the top. The S310S has the pipe come in from the side so it seems a lot more complicated than remove the top and remove the sand.
10819A22-B003-451F-99DE-6BC546D49704.jpeg
 

1poolman1

In The Industry
Jul 14, 2014
1,541
Sacramento
Yes, more difficult. Remove valve, remove both inlet and outlet fittings by unscrewing. Top (inlet/diffuser) is in the way so has to come out first. Be sure to get all new O rings/gaskets to reassemble. Obviously, sand out first. It was 500# dry. Closer to 800# wet.
 

dustinh

Member
Jun 18, 2021
5
Johnson City, Tennessee
Pool Size
20000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Welcome to spring in Tennessee. I am pretty sure that is pollen. Mine looks the same - pollen is terrible here in East Tennessee right now. If it is sand it should be accumulating right in front of and under your return jets as Texas Splash said
 

ducttapekz

Member
Jul 10, 2021
5
Nashvilel, TN
Pool Size
30000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-15)
I think you may be right about pollen. It really looked like sand but when it dried it was soft. I vacuumed again 3 days later and next to nothing in the baskets. I'll hold off on any filter maintenance.
 
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ducttapekz

Member
Jul 10, 2021
5
Nashvilel, TN
Pool Size
30000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-15)
Yes, more difficult. Remove valve, remove both inlet and outlet fittings by unscrewing. Top (inlet/diffuser) is in the way so has to come out first. Be sure to get all new O rings/gaskets to reassemble. Obviously, sand out first. It was 500# dry. Closer to 800# wet.
Thanks for the advice! I didn't see any YouTube videos where people repaired the ones with the pipes on the side, only the ones with pipes on the top. Would you recommend a home owner try to do this or would you recommend replacing the filter?
 

1poolman1

In The Industry
Jul 14, 2014
1,541
Sacramento
This is a large, labor intensive job. You have to get the old sand out either way, repair or replace. There is a Sand Vac that can help (outrageously priced piece of plastic, but they work). Or, you can use a pool vacuum hose to create a siphon (just keep the tank filled with water and use a garden hose to keep the sand loose, keep poking the sand with the vac hose and it will come out to the extent you can dump the tank over). Its a messy job. Then, you have to be willing to put it back together, fill it with sand and water, start it up and hope it was done right. That is the risk on a job this size, dealing with hundreds of pounds of sand, maybe twice. On a DE or cartridge filter the risk is minimal, some time and a few parts. The easy way is to take a reciprocating saw and cut the tank apart letting the sand fall out. You still have to deal with the sand somehow.