❧ Old Ways Handy Farm Devices - Cobleigh - chapter Perhaps something like this can be rigged to keep rainwater cistern clean. Incredibly clever auto-leveling fill to keep both barrels filling appropriately.
Running an fan through the middle to blow air up the pipes would help it radiate out. Bend the pipes around a 55 gallon barrel and make a rocket style insulation around it with sand and plaster. Place some sort of central blower to control speed of air