Algae? Or rust? Or just high cya?

[blondestar1616]

My FC is 4 my Cc is 0. My cya is around 40 perhaps a little higher ?? I waited a week to test and it was still low so added more and think it's a little high. But my water looks completely clear but when you walk or vacuum there is a little cloud of something that films the bottom.

When I vacuum which is about every 5 days (seems too need it too often?) I jave to vacuum to waste or else it just puts the dirty back in through the output. So then I need to add water sooner and we have high rust in our well water.

My questions would be
1 how often is usual for vacuuming? I don't have debris just that cloudy algae ish looking stuff but water is crystal clear

2 is there some way I can vacuum through the filter and not always to waste ?

3 do I need to take out some water to lower cya ?

4 does it sound like I need to slam even tho I have no CC and don't see algae sticking to sides or anything ?

 

[duraleigh]

I jave to vacuum to waste or else it just puts the dirty back in through the output.

When you are on "filter" position, are you saying the dirt/debris comes right back into the pool?

 

[blondestar1616]

When you are on "filter" position, are you saying the dirt/debris comes right back into the pool?

Yes where the water comes back into the pool looks like dirty water. It's a sand filter we replaced the sand at beginning of last year does it need it again ?

 

[blondestar1616]

Bump

 

[mulia]

your sand may have channeling
check out this thread
My sand is how to fix it?
sand never needs replacing, other than a bacquesil conversion
you can also deep clean your sand
Deep Cleaning a Sand Filter
heres the fc cya chart, you look ok
Pool School - Chlorine / CYA Chart
you can perform the oclt to see if you need to slam
Pool School - Perform the Overnight FC Loss Test (OCLT)

 

[duraleigh]

1. When did you last backwash?

2. What is the psi in your filter when the sand is clean? then, when it is dirty?

3. Have you ever deep--cleaned the sand?



My questions would be
1 how often is usual for vacuuming? I don't have debris just that cloudy algae ish looking stuff but water is crystal clear 1a. Vacuum as needed. every other day is not uncommon. Your pool can be crystral clear....your need not ever be cloudy

2 is there some way I can vacuum through the filter and not always to waste ? 2a. Of course, you have a multiport valve, correct?

3 do I need to take out some water to lower cya ? 3a. Yes, but a CYA of 40 is close to perfect - You have no reason to lower it.

4 does it sound like I need to slam even tho I have no CC and don't see algae sticking to sides or anything ? 4a. Yeah, you might need to SLAM but I am not sure. Can you provide a pic of what your water looks like?