Rain Water
Rain water is useful in breeding Killifish
& Anabantoids.
I finally finished the rain water butt section which comprises 4 x 45 gallon
butts. This stores a total of 180 gallons.
The butts are linked together & the pipe runs into the fish house to a tap.
This setup collects from an area about 20 square feet & can collect a decent
amount of water.