I just complete some of my ponics. i have joined an aeroponic system with aquaponic. there is a problem. i dont have enough fish. and its all gold fish.. anyone got other cold water fish or know where i can get some that is good for this type of system?? where can we get grass trouts?? happy to swap with my gold fishes Some of the pictures i have uploaded... http://aquariumworld.nz/forums/gallery/category/1-member-albums/