How it all works

Fish waste comes in two forms, just like ours, liquid and solid. Our 4,000 gallon production tanks occupy the rear third of the greenhouse, with a drum filter and a large biological filter in-between. The production tanks are similar to a pool in that they have both a surface skimmer and a bottom drain. The floors of the tanks are slopped so that all the solid waste from the fish naturally tumbles into the drain.

From there, the solid waste, (together with the water from both the surface and bottom drains) flow into the drum filter where the solid waste is extracted and sent into the septic tank, while the water is then sent through the Bio Filter where shredded PVC strands provide the necessary surface area that house beneficial bacteria that convert the fish’s liquid waste from ammonia to nitrate, rendering it non-toxic to the fish. The water is then recirculated back through the production tanks.

The solid waste breaks down in the septic tanks into a slurry which is then pumped into the mixing tank where other organic nutrients are added to complete the NPK nutrient complex. The pump in the mixing tank then floods the flood trays on a schedule which is determined by the needs of the specific crop being grown in the trays. The slurry can also be pumped into the main manifold of the irrigation system so that every plant, bush, vine and tree on the property may be ‘fertigated’.

Greenhouse Construction Pictures