How many gallons of water in a 4'by 24' round pool?

A 15' round pool with a 48" wall has approximately 5300 gallons
That same pool with a 52" wall, has 5800 gallons
5300 gallons of water with No / 0 salt, needs...
About 150 lbs
of salt,
Or about 60 - 70 Kg's
3200 ppm of salt is what you're looking to achieve.

Since 1 cubic foot is equivalent to 7.48051948052 gallons, you could attempt to do the math & make allowances for overflow & for a distance-to-the-top measure of what could be about half a foot. Otherwise, there are charts that help with understanding this.
http://www.swimtownpools.com/how-many-gallons-does-my-pool-hold-s/1317.htm

9 foot

depending on the salt system you are using, the amount of salt will vary. the owners manual should have a salt table with a recommended value. most salt systems will require somewhere close to a 3000 ppm level. to get this, you will need approximately 140 kg of salt. (65 lbs)

18,600 gallons (length x width x depthx 7.51 =gallons)

7539 gallons according to this website:
Pool Volume Calculator

You need to know how much salt is currently in pool...
then what is total gallons of your pool?
Round pool? 22' round?
52" walls?
Use only Pure Pool Salt, NOT Softener salt!
2700 ppm to 3400 ppm is the range for ideal levels in your pool.
check out this link...


http://www.conelyco.com/images/saltchart.jpg

btw... Your pool, if what I asked above is correct, has 11,400 gallons

Depends ... 15 feet round? 36 inches deep? = 3976 gallons

15 feet by 36 feet rectangle, how deep? if 5 feet deep = 20,250 gallons

Hope this addresses your question.

Thanks for your interest in FixYa.com

yes i put pure bleach in my pool....I only use one bag of shock it about every month or so and i use 1 and half gallons of water each week. U can about tell when u will need to add it..when the water starts getting cloudy. My pool is a 20 round...8,800 gallons, so if u have a smaller pool for instance a 15 round.....5,000 gallons, i would only put maybe 3/4 of a gallon and a smaller pool about half a gallon of bleach per week.

Now how to put the bleach in the pool is what u need to focus on. The way i do it is where the water is returned to your pool i open the bleach and make sure u r wearing old clothing because i didnt once and i had bleach spots on my shirt due to the water splashing back up through the return. Well just pour slowly where the water comes back in the pool.....this is to prevent the liner from bleaching. So i suggest that u do it as slow as u can...its a lil but tidias when u pour it in compared to just dumping a bag of but its well worth the money u save. Pouring it over the water that returns to ur pool is to make sure it doesnt hit the liner and bleach it.....the water from the return will mix in with what u are pouring so that wont happen.....It will save alot of money...i dont use any other thing in my pool but bleach and shock it like i said about every cpl months and all the shock it is for is to settle everything to the bottom so i can vacuum it up. My pool is sparkling clear. i can see every lil spec. Good luck and I hope this helps.....Let me know!
God Bless

Pure bleach, gets mine clear when it turns green. If its just clear water with a green tent then i would use bleach. I only use bleach to maintain my pool. I have a 20 round 88,00 gallon pool and i use 1 and half gallons of bleach every week to keep my pool clean and i use a bag of shock it every month or so, all the shock is used for is to drop everything to the bottom so i can vacuum it. If u have a smaller pool then i would use about 3/4 a gallon a week on a 15 round 5,000 gallon pool and about a half a gallon for a smaller pool. But it will for sure get ur water clear and if u dont want to use bleach then shock it will do it and to maintain use the shock it atleast once a week. When u use the bleach make sure u pour in over the where the water returns in your pool slowly to help it not hit the bottom. When u pour it over the clean water that is returning to your pool then it will help spread it throughout your pool and dilute it so it wont spot your liner up with lil bleach spots. So just pour it slowly over the return water comin out of the side of your pool. Also if its an algea problem then bleach will def work to prevent and kill the algea and u can u an algeacide to get rid of it if u dont want to use the bleach. The bleach is the cheapest way and fast way i have found to keep a pool clean. My pool is cyrstal clear, u can see any specs that is floating in it I hope this helps, please let me know what u think and rate solution. thanks and good luck
God bless