Please note the picture above is one taken from google, but is the same exact system.
This system is ideal for growing amazing tomatoes in a greenhouse or could be used indoors with lights. This system cannot be purchased new anymore and is highly sought after. It uses a 90 litre tank (included) to supply water via a small pump to the 12 pots which you fill with clay pebbles. This way you can grow tomatoes or other veg/fruit without the mess of soil and less chance of pests. The water pumps into the pots and flows back into the tank, it could not be simpler. I am not sure if I have the pump, but any cheapy fish tank or pond pump will do, around £15.
The item was once used many years ago and has been in storage since, I have cleaned it and it's good to go. Please email me and I will get back to you ASAP.