First cost: 8.25% - $.021an oz
10% - $.025 an oz
12.5%- $.027 an oz
Go with the 12.5% from BJ's right? 4 gal. for $13.99
Next how much do I need for the 5 - 6 month season on average daily use 1-2 hours and a solar cover when not in use. Probably a stupide question but how many gallons do people start with 40, 50, 60 gallons I dont have a clue?