Neato system, hope they have better luck than I did. I tried some aquaponics in my greenhouse. Used goldfish in a 100g acrylic tank I had sitting around, then had a 10g flat I filled with "pond pebbles" as my media. Had some mixed results. Lettuce would grow constantly, but the outer leaves kept dying off, had a tomato barely do much growing, but then when I removed it I found it had this ultra massive root system so it liked something. Also found little grey bugs started a colony in the pebbles, they didn't like the water because when I flooded it to try and rinse things out they definitely went to high ground. Also noticed it did gunk up quite a bit at the bottom.
Might try it again someday if I get inspired.
