Slightly more? Closer to 7.5 pounds per 25gal?you do realize that seawater contains 1/4 lb of salt per gallon. 25 gallons on a bathtub would require 6 one pound bags of salt.
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Slightly more? Closer to 7.5 pounds per 25gal?you do realize that seawater contains 1/4 lb of salt per gallon. 25 gallons on a bathtub would require 6 one pound bags of salt.