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About 4½ gallon working capacity. Welded of black iron with inset ends, rolled edges. Will not affect salts in any way, cannot damage solution, chemical balance or use life. Best tank available!
SPECS: 18 gauge (68.1L) black iron. 6" (15.2cm) x 6" (15.2cm) x 40" (101.6cm). Holds 4Ѕ" gallons of solution.