I mix 50 gal. at a time and I use one feeder size bag. So 5 of those.
How much salt should be added to hard water depends on what you want to accomplish by adding the salt.
0.25 gallons of water (or 1 quart)
2 gallons.
the answer is a mega gallon of water
Approx 1.86 gallons.
1 gallon of fresh water is about 8.36 pounds
A US gallon of water is 8.35 pounds. An Imperial gallon of water is 10 pounds.
the thing that weighs a gallon is a gallon of WATER or a gallon of milk.
At 17oC one gallon of water weighs 4.536kg.
there is about a gallon of water in a pineapple
1 oz / gallon
1 gallon