Cost of a catchment tank cover

[steve1]

Yeah, I inquired about the fitted sheet metal cones too and was told they have to be individually made for tanks because the sizes aren't standardized and they run about $15,000 so they are mostly sold to government agencies because they are so loaded with money. There's a nice example of the expensive one at the Pahoa Transfer station. I suppose for what they spent they could have drilled a well but the great thing about governments is they all cry poverty while trying to spend as much as possible.

Back this winter/spring I compared the cost/ quality between the two covers Island Catchment regularly carries. The thin polypropylene mesh like an animal feed bag lasts maybe 3-5 years and costs maybe 150-175 for a 17-20 ft. diameter tank. They also have a much heavier and more durable fabric that is supposed to last 10 years for the same size but it actually lets more light through so you have to do better algae control (more bleach, more often).

Since the last cover I bought was the cheaper one in 2009 and it was pretty shredded by winter I decided to buy the longer lasting cover for maybe $225-250 and am glad I did because I synched it down tightly before Iselle and had no problems whereas 3 of my close neighbors had cheaper and looser fitting covers and all suffered losses.