Ounces or ppm

[Adonisinpool]

Add 5ppm of liquid chlorine per day until the kit arrives. Continue brushing.

When it arrives, post your results so we can figure out if there is anything else to do before you start the SLAM process.

I see you tell everyone to add 5ppm of chlorine per day. I looked under FC in the Pool Math. It only shows by ounces. How does one determine ppm? Also, jugs are 2.5 gallons/320 ounces. It's not showing in the drop down menu.

 

[proavia]

I see you tell everyone to add 5ppm of chlorine per day. I looked under FC in the Pool Math. It only shows by ounces. How does one determine ppm? Also, jugs are 2.5 gallons/320 ounces. It's not showing in the drop down menu.

In PoolMath

• Click Overview
• Click Free Chlorine
• Under Current Free Chlorine enter your current FC
• Under Target Free Chlorine enter 5 ppm more than is in the Current Free Chlorine
• Under Sanitizer Type select Liquid Chlorine
• Under Chlorine Percent enter the strength of your liquid chlorine
• Jug Size doesn't matter
• Under Recommendation you will see how much (in ounces) to add to attain a 5 ppm increase
• Add the amount recommended

 

[Adonisinpool]

In PoolMath

• Click Overview
• Click Free Chlorine
• Under Current Free Chlorine enter your current FC
• Under Target Free Chlorine enter 5 ppm more than is in the Current Free Chlorine
• Under Sanitizer Type select Liquid Chlorine
• Under Chlorine Percent enter the strength of your liquid chlorine
• Jug Size doesn't matter
• Under Recommendation you will see how much (in ounces) to add to attain a 5 ppm increase
• Add the amount recommended

Where? I don't see that in here.

PoolMath

Discover the calculator behind the perfect pool, PoolMath. Dealing with pools has allowed TFP to become the original authors of the best calculator on the net.

www.troublefreepool.com

 

[PoolStored]

Enter 0 for current FC, and 5 for target FC...it will tell you how much.

 

[Newdude]

Or download the app

PoolMath

 

[Adonisinpool]

Enter 0 for current FC, and 5 for target FC...it will tell you how much.

Ok, that did it. It's asking 64 oz./half gallon. That's a lot per day. Liquid chlorine in stores are usually 12% strength, right?

 

[reggiehammond]

Ok, that did it. It's asking 64 oz./half gallon. That's a lot per day. Liquid chlorine in stores are usually 12% strength, right?

Depends; you can find 12.5% (less common), 10% (more common) or 6% (most common.) The first two are sold as "liquid chlorine or liquid shock" and the latter is bleach. Most 6% bleach options have unwanted anti-splash or fragrance additives.

Most pools lose 3-5ppm in peak summer in FC demand. The rationale for saying "add 5ppm daily" is for folks without a proper test kit to prevent their problems from getting worse while they await a proper test kit.
Test Kits Compared

Actual needed FC levels are determined by CYA levels. FC should never fall below minimum.
FC/CYA Levels

 

[Adonisinpool]

Depends; you can find 12.5% (less common), 10% (more common) or 6% (most common.) The first two are sold as "liquid chlorine or liquid shock" and the latter is bleach. Most 6% bleach options have unwanted anti-splash or fragrance additives.

Most pools lose 3-5ppm in peak summer in FC demand. The rationale for saying "add 5ppm daily" is for folks without a proper test kit to prevent their problems from getting worse while they await a proper test kit.
Test Kits Compared

Actual needed FC levels are determined by CYA levels. FC should never fall below minimum.
FC/CYA Levels

I mean in the pool stores. I don't waste my time with bleach.

So the rationale of 5ppm daily still stands even if one has 60 CYA?

 

[PoolStored]

I see you tell everyone to add 5ppm of chlorine per day.

Your first statement is not true. I do not tell everyone 5ppm. The recommendation is very dependent on the situation.

So the rationale of 5ppm daily still stands even if one has 60 CYA?

If CYA is high because of obvious puck use (even if we can't test), or the pool is very green, then 5ppm is appropriate.

If we have no indication of CYA from testing, and the pool is just cloudy, the recommendation might be 3ppm.

It is situation dependent.

 

[Donldson]

I believe the confusion lies in the pool store instruction we're all fed. "Keep your puck feeder full and you're fine until you get algae, then dump some stuff in and that'll probably clear it up." Blanket advice requiring no understanding of what or why.

That's not how TFP works. TFP is about testing your water and dosing it as is required. Most pools do not need to replenish 5 ppm FC every day, but without testing there's no way to know what it needs to keep it well above the minimum FC for its CYA level.

The recommendations you're seeing are for people in the process of getting appropriate test kits who want to make some effort to not fall behind while they wait on that vital data. It's not a maintenance routine, it's a stopgap until the real work can begin.

 

[proavia]

Ok, that did it. It's asking 64 oz./half gallon. That's a lot per day. Liquid chlorine in stores are usually 12% strength, right?

For a 12k pool that is using 12% liquid chlorine, 1 gallon (128 oz) will add 10 ppm.
So in your 12k pool using 12% liquid chlorine, 1/2 gallon (64 oz) will add 5 ppm.

Algae will burn thru chlorine quickly - hence the recommendation to add 5 ppm daily until you can accurately test the pool water with your own test kit.
Your attempting to keep the algae issue from getting worse. After your test kit arrives, post a full set of test results from using that test kit and post them here.

FC
CC
pH
TA
CH
CYA
Salt (if using a SWG)
Water temperature

Then be prepared to do the SLAM Process

 

[reggiehammond]

So the rationale of 5ppm daily still stands even if one has 60 CYA?

No - you need to add the amount of FC needed by your pool, based on your own test results, to stay above minimum levels per FC/CYA Levels.

TFP methods only would advise to dump 5ppm daily while you're awaiting a proper test kit so that you can then move forward with taking care of your pool, based on the science of FC/CYA levels, and your own test data.