I came across this kick-starter project today, and thought it to be pretty interesting. I seen other aquarists run dedicated aquariums in their racks that were veggie filters, but I haven’t seen a filter designed to incorporate this idea inherently. The EcoQube setup include the tank, filter, LED, and seeds for the plant.
The medium itself stay hydrated from the filter water, replenishing nutrients from the detritus of the tank. In this picture, they’re growing a basil plant, although, I wouldn’t recommend consuming any plants grown in this way, particularly if you’re using hobby-grade substrates and chemicals.
Take a look at their kickstarter video to get a sense of what their inspiration is for this project.
The guys behind this filter and setup are the folks from Aqua Design Innovations, who have been working with planted aquariums for some time. If you like the concept, consider donating to help to this product into production.