Replacing sand in filter

[JamesW]

The 1.5 hp SuperPump will hit about 90 gpm during a backwash. That's about 29 gpm per square foot of sand surface area.

Ideal flow is about 15 gpm per square foot of sand surface area.

So, your flow rate is almost double ideal.

It might be worthwhile replacing the impeller with a smaller size.

A SPX2607C or SPX2605C would work.

Also, get a k-1766 salt test kit.

Does the debris disappear when you try to net it out or can you net it out?

 

[mknauss]

If you brush that material shown in your picture does it 'poof' away? If so, most likely dead algae. Let us know.

 

[Lmlduradenali]

If you brush that material shown in your picture does it 'poof' away? If so, most likely dead algae. Let us know.

Yes it sure does it just disappears when I try to Net it , so it goes puff and the cloud is gone yes

 

[JamesW]

It might be mustard algae. I would suggest a SLAM.

 

[Lmlduradenali]

Wel I just added liquid chlorine today and levels are just rising

Understood about a slam but it’s not that that serious of algae I would say as the water is clear just getting the dust stuff on the bottom

 

[JamesW]

The problem is that the dust will probably never go away without a full SLAM.

Try maintaining fc at 15% of CYA for a while to see if it goes away. If it persists, consider a full SLAM.

Note that mustard algae will mostly go through a sand filter, especially when the pump is oversized for the filter.

 

[Lmlduradenali]

The problem is that the dust will probably never go away without a full SLAM.

Try maintaining fc at 15% of CYA for a while to see if it goes away. If it persists, consider a full SLAM.

Note that mustard algae will mostly go through a sand filter, especially when the pump is oversized for the filter.

Well my test kit will be here this week so [emoji1303][emoji1303][emoji1303]

 

[cfherrman]

After everything gets figured out, check out adding de to your filter for finer filtration.

 

[Lmlduradenali]

After everything gets figured out, check out adding de to your filter for finer filtration.

Explain some more or maybe a link please

 

[mknauss]

Pool School - Add DE to a Sand Filter

 

[Lmlduradenali]

System has rose in pressure.. back wash I show 12-15 psi and then when on filter it’s high

Signs of the pump going bad?

 

[Lmlduradenali]

The 1.5 hp SuperPump will hit about 90 gpm during a backwash. That's about 29 gpm per square foot of sand surface area.

Ideal flow is about 15 gpm per square foot of sand surface area.

So, your flow rate is almost double ideal.

It might be worthwhile replacing the impeller with a smaller size.

A SPX2607C or SPX2605C would work.

Also, get a k-1766 salt test kit.

Does the debris disappear when you try to net it out or can you net it out?

Having pressure issues being high according to POOL school.... what size pump should I get

 

[Lmlduradenali]

The 1.5 hp SuperPump will hit about 90 gpm during a backwash. That's about 29 gpm per square foot of sand surface area.

Ideal flow is about 15 gpm per square foot of sand surface area.

So, your flow rate is almost double ideal.

It might be worthwhile replacing the impeller with a smaller size.

A SPX2607C or SPX2605C would work.

Also, get a k-1766 salt test kit.

Does the debris disappear when you try to net it out or can you net it out?

Having some high pressure according to pool school. 20 psi . During backwash it is 12-15 psi and when I go to filter it’s 20 can we figure this out

 

[JamesW]

I would suggest that you replace the impeller with an SPX2605C.

Has your pressure always been this high?

 

[Lmlduradenali]

Now I’m seeing a little higher 22-23 dang

 

[JamesW]

Did you add de?

 

[Lmlduradenali]

Yes but very very little... and also tried to backwash and see

It’s always been a little high

 

[Lmlduradenali]

I would suggest that you replace the impeller with an SPX2605C.

Has your pressure always been this high?

Yes it has been a little high

Are u sure that part # would work

 

[JamesW]

What is the pump model number?

 

[Siber Express]

Just a stupid question, does the gauge drop all the way back to zero when it is shut off?