Polyquat 60 and Slam

run53

LifeTime Supporter
May 4, 2010
369
I have to close tomorrow (9/21) which is a little early for me, but we are going on a 10 day vacation on 9/27 and want the pool all wrapped up before I go. I usually bring FC to SLAM levels before closing. I've always had good luck with this, opening clear in the spring. I happen to have a bottle of PQ60 and wondering if adding that would be of any use. I know the high levels of FC will eat up the PQ60 but wondering if I get any additional protection from adding it on top of SLAM. Right now my FC is at 5.0 for CYA 70. So just about right. Thoughts?
 

run53

LifeTime Supporter
May 4, 2010
369
ok thanks for the input. I'm really just concerned about the next two weeks because that's the window where the water temp will be slightly above 60 degrees.

I think my plan will be to add the PQ60 today, then tomorrow bring the FC to about 15 which is about half of slam level for CYA=70. My FC was at 10 about a week a go and it tool all week for it to come down to 5. So with the cover on, I assume the rate of FC decline will be even slower. With the sun lower in the sky I get way more shade this time of year.
 
  • Like
Reactions: Texas Splash

Catanzaro

Platinum Supporter
TFP Guide
Jul 30, 2014
3,497
Monmouth County, New Jersey
Please see some information below. An important point is that chlorine levels should be lower if using Poly 60 or you are just wasting money. There was detailed information from Chem Geek as he contacted the manufacturer at one point where the Poly 60 alagecide is made. At $25 per bottle, safer is better. It is either low chlorine levels and Poly 60, or SLAM levels (then close) and no Poly 60. Please note that this is from experience and further readings.

POLY QUAT DETAILED INFORMATION. Your levels at closing are either at the highest or at normal, not in between. If you are using Poly-Quat, then you must allow your levels to come back down to normal.
If you are not using the algaecide, then keep at SLAM right before you close.
If you are using Poly-Quat, allow your levels to drift down to your normal CYA/FC levels. If you are not using the algaecide, you can close with the SLAM - higher levels.
You can even bring to SLAM the day before you close as well. There is an interaction between high chlorine levels and the algaecide that does not work well together.
"Polyquat does not oxidize chlorine; it is the other way around where chlorine oxidizes Polyquat."
Even the instructions state to keep your FC at a certain level. Post # 2, quote from (Chem Geek)
Polyquat algaecides: Mode of Action
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
29,698
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
Please see some information below. An important point is that chlorine levels should be lower if using Poly 60 or you are just wasting money. There was detailed information from Chem Geek as he contacted the manufacturer at one point where the Poly 60 alagecide is made. At $25 per bottle, safer is better. It is either low chlorine levels and Poly 60, or SLAM levels (then close) and no Poly 60. Please note that this is from experience and further readings.

POLY QUAT DETAILED INFORMATION.Your levels at closing are either at the highest or at normal, not in between. If you are using Poly-Quat, then you must allow your levels to come back down to normal.
If you are not using the algaecide, then keep at SLAM right before you close.
If you are using Poly-Quat, allow your levels to drift down to your normal CYA/FC levels. If you are not using the algaecide, you can close with the SLAM - higher levels.
You can even bring to SLAM the day before you close as well. There is an interaction between high chlorine levels and the algaecide that does not work well together.
"Polyquat does not oxidize chlorine; it is the other way around where chlorine oxidizes Polyquat."
Even the instructions state to keep your FC at a certain level. Post # 2, quote from (Chem Geek)
Polyquat algaecides: Mode of Action
Please see this later (2015 vs 2012) post from Chem Geek supporting using Polyquat 60 at half SLAM FC levels...

 
Thread Status
Hello , This is an inactive thread. Any new postings here are unlikely to be seen or responded to by other members. You will get much more visibility by Starting A New Thread