With enzymes, you cut out all of your pool opening and closing chemicals. Aside from the cost savings, you will now be swimming in water that is as close to nature as possible for a swimming pool. Your pool walls, equipment, skin, eyes, hair, and bathing suit will appreciate the decrease in chemicals.
In a normal year in a colder climate (not year round pool use) a 10,000 gallon pool will require 16 ounces of Waters Choice. If your pool is larger, or used year round, you should order the 32 ounce or gallon size Waters Choice. A 10,000 gallon pool used year round will need about 29 ounces the first year and about 26 ounces in subsequent years. Not sure how many gallons your pool holds? See our Pool Water Treatment page.