- Sat Oct 03, 2020 7:09 pm
Cloth is probably the best way to go. Just remove some of the rainwater from the tub and soak.rinse the cloth in the rain water well before you use it as a filter. Discard the soak/rinse water. Use a finely woven piece of cloth as your filter. Just keep in mind that rain water sitting in a tub outside is also accumulating dissolved solids from dust, rotting debris in addition to the stuff floating in it. The purchase of a Zerowater filter would be a good second step after you have removed the physical debris. It comes with a tds meter and would be helpful to you for testing other cp related materials, as well as the raw rainwaer. A recommended purchase.