Cost of a catchment tank cover

[whalesong]

The smart way to do it, is go to "Rudy's Shade Cloth" and have them custom design one for you. It is UV protected and they can put grommets on it, and it will last you for many years. Just let them know you'll be using it for your catchment, they know what U/V % to use, I forget what ours is. They are located over by the zoo. On that road, take the 1st left and it's the 2nd building on the left. Periodically, put a box of baking soda in your tank, add to a bucket first, to dilute it, then pour it in, then spray your cover down,at least once a month, this will reduce mold/dirt. On your down spout, place a knee high nylon, this keeps the big dirt out.
We have also used the 40% shade cloth for our porch, it's a lot sturdier than the regular screen, and you don't have to piece it together.