. >> carlina and darrell brown are accidently shrimp farming pioneers. with their two basic backyard pools as growing tanks they perfected the system with zero waste, no chemicals and 90% survival rate. that's a third higher than traditional outdoor shrimp farms. >> wow, this is like a little laboratory. >> and a shrimp farm. >> yes it is. >> i notice there had is foam on top. >> it's mostly it has come to the top and it. will disappear. >> it is part of the process? >> it is part of the process. >> i got some. >> yes, you did. they're very translucent but as you can see here there is their only protection, and he's mad right now. he's very angry. >> the shrimp has a little horn. >> yes. where your thumb is at is where his heart is at, and you can see his heart beating. >> a month later promoted to the production tank with a turn into dinner. >> now you need 40 of them. >> i have to keep going. >> you would have to keep going. >> you got six. >> are you saying that i'm a bad scooper? >> i get to do some shrimp testing and more lab work tonight on "techkn