Today I discussed with Kate about having a digital screen as opposed to the tank, however since the origin of the project started with something very organic and I believe that I should stick with that notion. I have now decided that my design will be a shallow tank of running saltwater, containing several types of seaweed and some rocks. 

detail of my artistic gesture

gesture of seaweed bench top for model

gesture of seaweed floor for model

I think it will be interesting to se how the nature of the plants respond to the conditions of the room, I expect that the light will determine where and how much the seaweed grows.