Platinium 100 Series Hydro StonePlatinium 100 Series Hydro Stone is a full modular hydroponic drip system perfect for small areas. It comes with 20 pots with a 6 liter capacity each. You can use it for growing in square pots or Rockwool cubes. The system includes an accessible reservoir, a pump, drippers, a reservoir tray, and a tubing kit. Easy Tank Access: This efficient system comes with a tank with a removable lid. It offers a quick view of the remaining nutrient solution.