Up to 10 inch pots. Up to 16 inch pots. Hozelock Aquasolo Cones are an affordable solution for watering plants when away for a few days or on holiday. All that's needed is a 1 litre or 2 litre plastic bottle filled with water. Simply screw the bottle to the Aquasolo and then plant in to a pot. These reusable ceramic cones have patented technology to water plants according to their needs. They are compatible with most plastic bottles and are supplied with an adaptor.