I'm going to have to close this year with a water temperature of 66 degrees because my pool closing is already scheduled for this week and my PB can't do it at a later date. I plan on adding polyquat the night before closing since water temperature is above 60 and I have a mesh cover. According to the post at the top of this sub-forum, you should add the polyquat at normal chlorine levels. The information on the pool school page says to add it at half of shock level. Which chlorine level is preferable when closing with water temperature above 60 degrees? I added it last year at half shock level to 60-degree water and opened up to a green pool so I wanted to clarify this. I also need to know if I should add it at the minimum recommended dose, which is 7 oz per 10,000 gallons, or at the maximum recommended dosage, which is 11 oz per 10,000 gallons.
Chlorine level when adding polyquat and recommended dosage
- Thread starter al27
- Start date
- Jul 21, 2013
- 52,504
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Either one will do. A bit more chlorine may last longer which is the reason for up to half SLAM level.
Saturn94
Bronze Supporter
- Mar 11, 2015
- 1,746
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
I forgot where I read this (one of the forums), but I use the “visible algae” dose; 16oz per 10k gallons.