catchment cover

[YurtGirl]

Terracore has it right on the description. Any beach balls etc are not going to last long in our high UV. You could get the central metal 'wheel' and use PVC but I expect it would sag after a year or two. Try waterworks. Doubt they cost as much as it would eventually run trying to reinvent that particular wheel... to keep out slugs, run a strap around the top perimeter, clinching the cover tight to the metal.

Good Luck~

Melissa Fletcher
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"Make yurts, not war" Bill Coperthwaite, 1973