Water Chemistry Help

JPMorgan

Well-known member
May 22, 2018
400
Elmhurst, IL
Pool Size
20000
Surface
Plaster
Chlorine
Liquid Chlorine
Using Pool Math, it looks like about 50 lbs of calcium chloride would raise CH to about 320 and reduce CSI to about -.3. which gets me to a good place on CSI. Think that's my next step. I'll keep you posted. Thanks.
 
  • Like
Reactions: Mdragger88

JPMorgan

Well-known member
May 22, 2018
400
Elmhurst, IL
Pool Size
20000
Surface
Plaster
Chlorine
Liquid Chlorine
Would you be concerned about the "other" 6% in the SS7300? Is there a SDS on the Morton Professional Grade Calcium Chloride Pellets? The Product Data Sheets do not seem to be consistent with the SDSs. The SS7300 PDS says 100%..... the SDS says 94%!

On another note, pH in the pool seems to have stabilized around 7.6. Got that reading when I tested today. Had been reading 7.0 (or below) for at least a week before I started adding soda ash.... so nice improvement. I think the calcium hardness increaser before closing will do the trick to get CSI where it needs to be.

Question: how soon after soda ash is added to water is it safe for swimmers to go in. I'm always adding in the deep end.
 

JPMorgan

Well-known member
May 22, 2018
400
Elmhurst, IL
Pool Size
20000
Surface
Plaster
Chlorine
Liquid Chlorine
Outdoor pool is closing Monday, so my attention is turning to the indoor pool which is a bromine pool. I have never maintained a bromine pool. Can anyone give me the "skinny" on maintaining proper water chemistry with bromine? What are the bromine levels I want to maintain? Do I do all the same tests that I would do on a chlorine pool with the exception of CYA?
 

PoolStored

Gold Supporter
Jun 24, 2021
564
Ashtabula, OH
Pool Size
31000
Surface
Vinyl
Chlorine
Liquid Chlorine
I have been monitoring this thread. I don't have enough experience with the Calcium Chloride brands to help guide you. I tried to get @mknauss to weigh in, he must be otherwise pre-occupied. I have vinyl pool, so CH is not an issue for me. Maybe try the search function on the forums? I just know that most recommendations were to make sure there are not bad impurities in the CaCl. After a review of a 1/2 dozen threads, if you get an SDS of 90% + CaCl you should be good.

Can't help you on the Bromine. I would suggest a new thread for your Bromine question.
 

JPMorgan

Well-known member
May 22, 2018
400
Elmhurst, IL
Pool Size
20000
Surface
Plaster
Chlorine
Liquid Chlorine
After a review of a 1/2 dozen threads, if you get an SDS of 90% + CaCl you should be good.

Can't help you on the Bromine. I would suggest a new thread for your Bromine question.
Sounds good on the CaCl. I will likely go with the SS7300 since the SDS says it's 94%. Also cheap and easy to pick up at Ace nearby.

Will start a new thread for my bromine pool maintenance questions, as you suggested. Thanks.
 
  • Like
Reactions: Mdragger88

Newdude

Gold Supporter
TFP Guide
Jun 16, 2019
11,511
NY
Can anyone give me the "skinny" on maintaining proper water chemistry with bromine?
7 pages worth :)
 

Enjoying this content?

Support TFP with a donation.

Give Support

JPMorgan

Well-known member
May 22, 2018
400
Elmhurst, IL
Pool Size
20000
Surface
Plaster
Chlorine
Liquid Chlorine
I see a gallon of this stuff (see pic) along with about 3 gallons of liquid chlorine (12.5%) in the storage room to be used for closing the Association's outdoor pool tomorrow. Can anyone comment on this Winterizer that the pool comapny is putting in the pool. Is this good stuff or unnecessary?

IMG_2357.jpg
 

TexEdmond

Gold Supporter
Jun 16, 2021
519
Edmond, OK
Pool Size
25500
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
Quick google search suggests polyethylene dichloride is a product called "Polyquat." I have no experience with it, but there's at least some advice here on TFP for residential pools and winterizing. It does get used up over time. It looks like a polymer algaecide and can be effective especially if there's a pool cover or there's a crust of ice on the top of the water. Also it's a very viscous fluid that should probably be premixed before dosing if the pool water is cold. Maybe the condo folks can help with anecdotal history of the pool freezing over in the Chicago winter? I'd take that as an almost certain bet.

@chem geek any thoughts on a condo pool using this as a closer chem?
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
29,661
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
I see a gallon of this stuff (see pic) along with about 3 gallons of liquid chlorine (12.5%) in the storage room to be used for closing the Association's outdoor pool tomorrow. Can anyone comment on this Winterizer that the pool comapny is putting in the pool. Is this good stuff or unnecessary?

View attachment 375637

It is Polyquat 60 and often used for closing. It is a good insurance policy over chlorine.

Read Algaecide - Further Reading
 

JPMorgan

Well-known member
May 22, 2018
400
Elmhurst, IL
Pool Size
20000
Surface
Plaster
Chlorine
Liquid Chlorine
It is Polyquat 60 and often used for closing. It is a good insurance policy over chlorine.
Thanks. Makes me feel better that they are using the right stuff. Looks like their process is to add about 3 gals of Cl, the Polyquat, then drain below return lines and cover. Haven't seen it yet, but they tell me it's a mesh cover.
 

PoolStored

Gold Supporter
Jun 24, 2021
564
Ashtabula, OH
Pool Size
31000
Surface
Vinyl
Chlorine
Liquid Chlorine
Thanks. Makes me feel better that they are using the right stuff. Looks like their process is to add about 3 gals of Cl, the Polyquat, then drain below return lines and cover. Haven't seen it yet, but they tell me it's a mesh cover.
 

JPMorgan

Well-known member
May 22, 2018
400
Elmhurst, IL
Pool Size
20000
Surface
Plaster
Chlorine
Liquid Chlorine
Here's how the pool company closes the Association's outdoor pool. Sad! No wonder they have to dump all the water and power wash it when opening in the spring. Hoping I can help change this next year. The second pic is what my pool (now my daughter's pool) looks like this time of year.

IMG_2436.jpg

IMG_2440.jpg
 

Newdude

Gold Supporter
TFP Guide
Jun 16, 2019
11,511
NY
Bring all the photo proof that you can to sell your case to the board. Show them the TFP clear thread to really WOW them.....
 
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