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The following is a list of approximate gallons for our common pool sizes. All numbers are for flat bottom pools.

Size of pool: 

8'
12'
15'
18'
20'
24'
28'
33'

11' x 18.5'
12' x 24' 
15' x 25'
15' x 30'
18' x 33'
18' x 38'
48" tall # of Gallons: 

1,700
3,500
5,300
7,600
9,400
13,600
18,500
25,700

6,600
9,200
10,200
13,700
17,500
20,500
52" tall # of Gallons:

2,000
3,800
5,700
8,200
10,000
14,600
20,000
N/A

6,100
8,500
11,000
14,800
18,900
22,100

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Natural Chemistry 3722 Pool Magic Spring & Fall 1L Natural Chemistry 7001 Metal Free 1L 25 LB Pool Solutions 3" Stabilized Chlorine Tablets Wrapped
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Natural Chemistry Pool Magic Spring & Fall 1L Natural Chemistry Metal Free (deactivates metals) 25lb Pool Solutions 3" Stabilized Chlorine Tablets Wrapped
50lbs Pool Solutions 3" Stabilized Chlorine Tablets Wrapped Pool Winterizing Kit 12,000 gallons
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$11.50
$10.49
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Pool Solutions 3" Stabilized Chlorine Tablets Wrapped 50 lbs Pool Winterizing Kit, treats up to 12,000 gallons, kit includes winterizing granular and non chlorine shock