Gutters, filters, and a cistern
We're building a house with a metal roof and we've had 3 LARGE plastic tanks installed for a cistern to collect rainwater for our garden. We were contemplating gutters like the K-Guard to decrease the amount of detritus washing into the tanks, but we've been told that with the metal roof, water may just sluice off and overshoot the gutters. If this is true, then I guess we need some sort of in-line filter going into the tanks. Anyone have any suggestions or experience with this?