Great Post. its refreshing to see a fellow aquaponic pioneer who is informed. The Bioponics is a great idea..

I found out about almost all of these same issues the hard way.. when I started there wasn't hardly any information out there that wasn't fraught with problems. I would never suggest to anyone, building an IBC tote system like you see all over the place, with the pump in the fish tank and the grow bed as the bio filter..
Talk about a messy nightmare.. GEEZ...

I also found that the SEA90 salt works wonders in aquaponics, and it helps to control snails. The fish and the plants can handle changes in salinity, not so with snails.. and it dissolves lots of micro nutrients as well.

Keep up the good work..