?     Asked on 5/27/2015by Inyo Visitor

I have an 18 inch round pool and would like to know if this is the right size pump for and 18 inch round?
 Reply

A  Answered on 5/27/2015 by InyoPools Product Specialist Lennox H.

If you meant 18ft Round Pool this Pentair Sand Dollar 1 HP W/ 19" Tank Sand Filter System will work for your pool.
 Reply


?     Asked on 6/14/2015by deb

we have an above ground 28' round pool with a pentair water sand filter system ; when the filter is running a water leak generates from the valve flange/plastic clamp area - is there a specific size O ring that we should replace?
 Reply

A  Answered on 6/17/2015 by InyoPools Product Specialist Lennox H.

Deb, You will need to replace the TA30D,35D,40D,50D,60D Valve Body O-ring (350) to keep the filter from leaking.
 Reply


?     Asked on 6/20/2016by Steve

how do you remove the sand drain plug on a Pentair SD-40 sand filter?
 Reply

A  Answered on 6/25/2016 by InyoPools Product Specialist Lennox H.

Hi Steve, The drain plug assembly simply unscrews from the filter tank.
 Reply


?     Asked on 10/10/2016by Inyo Visitor

I'M looking for a sand filter and pump system for a 600-1200 gallons of salt water more or less to keep lobsters alive. Will this work?
 Reply

A  Answered on 10/12/2016 by InyoPools Product Specialist Alan M.

This system would be more than enough to circulate and filter 600-1200 gallons of water.
 Reply


?     Asked on 4/26/2017by Bert

Can I used K1 bio media instead of sand and used this filter for my 2000gal koi pound.
 Reply

A  Answered on 4/27/2017 by InyoPools Product Specialist Lennox H.

Hi, Bert. Unfortunately, these sand filters are not designed to use the K1 Bio Media.
 Reply


?     Asked on 6/14/2017by Inyo Visitor

Would this filter work on a 22 foot round size pool
 Reply

A  Answered on 6/14/2017 by InyoPools Product Specialist Hector F.

Yes, this system is sufficient for your size swimming pool.
 Reply


?     Asked on 6/15/2017by Mikki

When my pump is running, air is in the bottom filter. Bleeding it off works for a while but the air returns. Also, when we turn the pump off, water shoots up the pool filter. PSI's are fine. We are novices at this. The troubleshooting guide in your manual does not address this. In fact, I am wondering if the gasket on this filter is allowing air to seep in but I can't find where or how to order it on your website. Basket in filter is clean. Any help is appreciated.
 Reply

A  Answered on 8/4/2017 by InyoPools Product Specialist Alex V.

Mikki, If you suspect an air leak, it will come from the suction side (pump). I would check the hose in between the pump and skimmer and the pump lid o-ring. You can find replacement parts for your system on this parts page.  
 Reply


?     Asked on 12/31/2020by Richard Wiland

Will this be alright for 15x30x52 and can this be filled with zero sand
 Reply

A  Answered on 1/4/2021 by InyoPools Product Specialist Hector F.

Hi Richard, yes this s a good size pump/ filter system for your size swimming pool and can also use zeo sand. 
 Reply