1. The use of drip pots soil thickness of not less than 15 cm, or difficult to fix.
2. Drainers for the size of the bottle is not limited, 500 ml to 1.5 L can be. Bottle size similar to the most appropriate Coke bottle, large caliber sports drink bottles do not.
3. General 500 ml of normal drip rate can be about 1 to 2 days, 1.5 L of the bottle can be slow to drop 7 to 10 days or so.