Ever think of using a shower buff ball?It's a basic open screen filter.
There is a "first flush" pipe then it leads to the intake that has another screen with a dbl pantyhose internal filter. That one needs to be changed often. Works like a champ. 1/2" of rain is 1200 gallons. A medium rain will fill the tanks from empty.
Yes. It's asphalt shingles, but most of that junk hits the first flush and wouldnt make it through the pantyhose.
Combine this with a berkey and you're golden.
Considering setting one up next to the house to use for flushing toilets.
As a secondary filter?

