Comment by Kobus Jooste on August 15, 2011 at 2:54am
Mark - I built this one for a project I'm busy with. I'm researching a Lemna filter for aquaculture where all the components of filtration (Lemna and solids removed) becomes a fertilizer product. It is in my back yard. All the components come from Port Elizabeth based businesses, but apart from the erection of the greenhouse frame and cladding, I put it all together myself.
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