Unfortunately no, I never ended up taking pictures of the fish, at least, not in the tanks. The tilapia have all been eaten, and some of the goldfish have got a reprieve and are living in the house, haha. These are a couple of the free loaders: (All 7-8in long.)

I dont know if the beds would have better nutrients, as it would be the same water either dripping through the towers, or flooding the beds... It might be easier for them to absorb them though, being flooded rather than grabbing nutrients on the way by. Food for thought...
Thanks!