Granddaughters swim party

[fnc1962]

I remember from last swim party that the water was getting cloudy. I would think that the sunscreen that was used is the cause.
What can I do before the party to prevent the cloudiness?
Thanks!

 

[ajw22]

What are your pool test levels now?

 

[jblizzle]

If the pool is currently properly clean and sanitized, then just bump up the FC levels to ensure it never drops below the minimum.

 

[fnc1962]

What are your pool test levels now?

Pool numbers are usually like this except Ph which is usually 7.2 to 7.5.
FC 4.5
CC 0
Ph 7.8
CH 250
CYA 40
Temp. 86

Water is crystal clear.
Only gets cloudy with heavy use over a couple hrs. Probably SunScreen. I'd like to keep it clear during swim party. I believe raising the chlorine level before party should do the trick. Any suggestions on what level is safe for swimming.

 

[ajw22]

Pool numbers are usually like this except Ph which is usually 7.2 to 7.5.
FC 4.5
CC 0
Ph 7.8
CH 250
CYA 40
Temp. 86

Water is crystal clear.
Only gets cloudy with heavy use over a couple hrs. Probably SunScreen. I'd like to keep it clear during swim party. I believe raising the chlorine level before party should do the trick. Any suggestions on what level is safe for swimming.

See Pool School - Chlorine / CYA Chart

Up to 16 is safe for CYA 40. I would target 9 -10 as FC over 10 gives unreliable PH readings.

FC of 4.5 is a bit low for CYA 40. You should be targeting 5 - 7.

 

[YippeeSkippy]

agree with upping your normal daily to about 6 to allow for daily sun loss toll.

During party keep pump running and before party up FC to about 10 with liquid chlorine/bleach.

Have fun!!

Maddie

 

[fnc1962]

Thanks! That was what I was thinking.

 

[mclaflin]

See Pool School - Chlorine / CYA Chart

Up to 16 is safe for CYA 40. I would target 9 -10 as FC over 10 gives unreliable PH readings.

FC of 4.5 is a bit low for CYA 40. You should be targeting 5 - 7.

I was wondering about “safe swimming” levels as well. FC of 16 is the shock level for CYA of 40. So for a CYA of 60, a safe FC Level is 24 (from the Chlorine/CYA chart)?

 

[jblizzle]

I was wondering about “safe swimming” levels as well. FC of 16 is the shock level for CYA of 40. So for a CYA of 60, a safe FC Level is 24 (from the Chlorine/CYA chart)?

Correct ... and really even higher than that would be safe and less active chlorine than you would find in a indoor un-stabilized public pool with a FC of 2ppm.

Here is a table for comparison:
http://troublefreepool.com/~richardfalk/pool/HOCl.htm