Cultivation in live moss requires a good water supply which is obtainable with a reverse osmosis apparatus with four cylinders, also 1. a filter to remove dirt; 2. also to remove the finest insolubles; 3. activated charcoal to remove chloride and chlorine,4. reverse osmosis process where one-third of the water enters the storage tanks with the impurities reduced from 600ppm to 20ppm; the machine costs nearly $2000. OD87-40