How high should I bring FC before a party?

[Hudsongirl]

I have a salt pool, 70 CYA and usually keep FC between 6 and 8... we're having a 4th of July party with about 25 people and since our pool is new it's never see that many people before. I've see it recommended to bump up FC before a party or heavy use, but by how much. Do I bring it to the top of the recommended range (10) or up past that a bit like between recommended level and slam level?

 

[PoolStored]

There are a bunch of different strategies....

I keep my SWG 24/7 at 15%. When we have a few swimmers, I turn up the SWCG to 50%, if a lot of people, 75%. Turn it back down at the end of the day. Seems to keep it in range.

You can take it up between top of the range and SLAM level. Best to use liquid chlorine to raise it.

You can test every couple hours during the party and add chlorine to keep it up. You don't need to stop the party.

 

[bobloblaw42]

I'd make it easy on myself and (using Pool Math) add some number of whole gallons of LC day of that would take it above top end of maintenance range but not above SLAM.

 

[proavia]

If testing a few times during the party isn't your thing....

• Have 4 gallons of fresh liquid chlorine on hand (10% or 12.5%)
• Morning of the party - test and adjust pH as needed - then add 1.5 gallons of liquid chlorine to your 18300 gallon pool
• Evening after everyone is done swimming, add another 1.5 gallons of liquid chlorine
• Moring AFTER the party - test and adjust pH and FC as needed
• The extra gallon of chlorine can be added mid way thru the party if needed or the morning after

One gallon of liquid chlorine will add

• One gallon 10% - 5.5 ppm in 18300 gallons
• One gallon 12.5% - 6.8 ppm in 18300 gallons

You can also set the SEG to super chlorinate or boost mode - but you may need to monitor the FC level during the party.

 

[Newdude]

I go to half slam usually. If it's a blowout party (as yours is) or there are several kids I go all in at slam FC. I've lost count how many folks I've had in my pools at elevated levels since 2012. A good amount of them always remark how nice it is with 'no chlorine' because they can't smell it. *giggles*. Please don't tell them. Let them be ignorantly happy.

 

[Hudsongirl]

Thanks for the advice everyone! I think I'll go LC before the party, turn up the SWG a bit and then test after to see if I need to add more. I am optimistic because it's more adults than kids that there'll be less pee in the pool lol