Chemistry readings uncertainty

[mknauss]

Then they likely need to be removed to clean them.

 

[gnhand]

Then they likely need to be removed to clean them.

What would the procedure be - from my recollection of the back of the stair case I’m do not think there is access to allow brushing much of the inside.
I think replacement would be the only way. And they may cost in excess of $1k.

 

[mknauss]

I don’t have any like it. Just observations from others with above ground pools.

 

[gnhand]

I don’t have any like it. Just observations from others with above ground pools.

I’m thinking that you may be correct. I’ll see if the slam works. If I can’t solve the problem I’ll then have to see what is available to replace the stairs. My wife hates them so she’ll be happy

 

[gnhand]

I believe that i passed the OCLT this morning- test completed at 5:35 am

 

[gnhand]

Now that the fc level has passed OCLT several days in a row my question is “what should my target fc level be”?

Pool math lists that the acceptable fc is 3 to 10. It lists the target fc level is 4. To me 4 gives me no cushion for a possible drop in fc. I would set my fc target to 6.5 which is midway between 3 & 10.

Do the experts agree with my thinking (fc 6.5) or should I use the target calculated by pool math (4)?

 

[HermanTX]

Now that the fc level has passed OCLT several days in a row my question is “what should my target fc level be”?

Pool math lists that the acceptable fc is 3 to 10. It lists the target fc level is 4. To me 4 gives me no cushion for a possible drop in fc. I would set my fc target to 6.5 which is midway between 3 & 10.

Do the experts agree with my thinking (fc 6.5) or should I use the target calculated by pool math (4)?

In the summer I always aim for the high side of the target. This gives you some wiggle room for very hot UV days. You do not state your CYA. So while 6.5 is in the middle but you included the minimum. Never temp the minimum. If your target range is 5-10 ppm then use that for your calculation and say 7.5. I would aim for 8-10ppm.

 

[drsipe]

Your last CYA, you have in pool math was 65, so round up to 70, so the minimum is 3ppm,and you should attempt to never get even near 3ppm. If it were my pool I would target 7-9ppm.

 

[gnhand]

Please do not get pool store tests. Just confuses the fact you have the best, most accurate method of testing your pool water chemistry.

You might do well to get the 50 ppm CYA standard solution to see what that result looks like to your eyes.

I have a bottle of that - it came without instructions.
Do I mix it with tap water or my pool water ?

 

[gnhand]

I have a bottle of that - it came without instructions.
Do I mix it with tap water or my pool water ?

Or with CYA

 

[gnhand]

Or with CYA

Correction- I found the instruction sheet