If you have plants on your balcony or inside but don't have access to a water faucet, the Mini Slot Pump is a great solution for automatic irrgation when you are on holiday or away It can pump water from any storage container and deliver it directly to your plants and is suitable for 10–50 plants per model. 15 Series = 15-20 Plants, 30 Series =30-35 plants & 50 Series =50 Plants