# how many gallons of 6% liquid bleach one 3" chlorine tablet?

#### swom

...how many gallon size bottles of 6% liquid bleach would equal one 3" chlorine tablet? Thanks!

#### Butterfly

TFP Expert
Re: BBB for Beginners

um, dunno! Try PoolCalculator.com

Welcome to the forum

#### Bama Rambler

TFP Expert
Bronze Supporter
Re: how many gallons of 6% liquid bleach one 3" chlorine tab

Welcome to TFP!

As BF said, you can use the Pool Calculator to figure it out.

#### swom

Re: how many gallons of 6% liquid bleach one 3" chlorine tab

I did try it and can't get it to work......

#### Smykowski

TFP Expert
Re: how many gallons of 6% liquid bleach one 3" chlorine tab

swom said:
I did try it and can't get it to work......
Here's some back of the napkin math....

One 3" trichlor puck (7 oz. of trichlor) raises a 10K gal pool's FC by 4.8.

100 oz. of 6% raises the same pool's FC by 4.8.

By the transitive property (math teachers, back me up)...

one 3" puck = 100 oz. of 6% bleach.

#### chem geek

TFP Expert
Re: how many gallons of 6% liquid bleach one 3" chlorine tab

I set the pool volume to 10,000 gallons, though it doesn't matter what one uses since the result will be a relative one. I then set the chlorine source in the pull-down menu in the FC section to "trichlor", set the Now to 0 and adjusted the Target number until the Trichlor weight became 8.0 ounces which is the weight of a typical 3" tab/puck (they can vary from 6 to 8 ounces). The FC Target it took to make that happen is 5.5 ppm. I then made sure the bleach percentage was set to 6% and saw that this was equivalent to 114 fluid ounces of 6% bleach. This number is a little different than the previous post because that post assumed a 7 ounce puck weight -- if you use 4.8 ppm FC as the Target, then you'll see a Trichlor weight of 7.0 ounces and a bleach amount of 100 fluid ounces.

#### swom

Re: how many gallons of 6% liquid bleach one 3" chlorine tab

OK, I will try your instructions and see if I can get it to work. I'm very excited about this site and really want to use the BBB system to keep my pool clean. I do appreciate your patience with a new user! :-D

TFP Expert