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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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Leisure Time Chlorine Test Strips 50 Count per Bottle Natural Chemistry 3722 Pool Magic Spring & Fall 1L Natural Chemistry 7001 Metal Free 1L
$14.99
Leisure Time Chlorine Test Strips give spa owners an easy way to test for chlorine levels In their water, and their accurate results will determine if any corrective measures must be taken. Natural Chemistry Pool Magic Spring & Fall 1L Natural Chemistry Metal Free (deactivates metals)
25 LB Pool Solutions 3" Stabilized Chlorine Tablets Wrapped 50lbs Pool Solutions 3" Stabilized Chlorine Tablets Wrapped Pool Winterizing Kit 12,000 gallons
$63.99
$99.95
$12.50
25lb Pool Solutions 3" Stabilized Chlorine Tablets Wrapped 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