Hello, I purchased a 55 gallon blue water barrel. Obviously this will be pretty heavy when filled. What is the best way to fill them? Can I just fill them with the garden hose since I am planning to keep it in the garage? Also, there seem to be several different methods for water purification, including aquamira, katadyne tablets, calcium hypochlorite and some long-term solutions (good for 5 years I think)? Is there any method that is best or is more highly recommended? This water is intended to be potable Thanks!