No, it uses a pump. Really simple! Just use the bottom tank as a reservoir and then pump water up and through the delivery pipe. I drilled some small holes in the pipe about 10cm apart to get a good even watering. Also in the bottom of the root tank there is a thin layer of loft insulation. This filters out any solids so as to keep the pump clean.

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GreenGuitar Reviewed by GreenGuitar on . Good results so far Hey dudes, I'm currently on my second grow and things are going pretty well. (see photos) I've read alot of threads on this site that relate to getting started, so here are some of my top tips. 1) Watering - home made system that uses 2 plastis storage boxes, 1 inside the other and a cheap aquarium pump. Cost $20 2) Lighting - stole my light from work, (industrial plant) 250w HPS. Have a look round your local area. Most commercial outdoor lighting is suitable for growing, Rating: 5