I was so excited to have my first AP system set up. 55 gallon tank in my kitchen
fish where eating and plants where growing (fast) then my first asin catfish got white patches and went jaw up dead. The next day the bigger one died 
Ok, so i need to get a water testing kit. And remove the metal fork i was using to weight down the air stone and buy some salt.
But as i'm researching to try to figure out why my fish are dying, i come across this : http://www.backyardaquaponics.com/Travis/Aquaponics-and-Food-Safety.pdf section 8 reads bateria infections that effect both fish and humans. The system is in MY KITCHEN!! Seriously, how dangerous is it to have water from desised fish in your sink where you do your dishes? Never mind that, we ate some herbs (washed off) that where growing in the water.
I'm looking to understand the real dangers of possible infections before i try this again. I seriously don't need to be giving my family V. parahaemolyticus. Yet, i really really want an AP system and i want it inside.
Advice, general comments, reality checks are all welcome.