Believe it or not it doesn't take a whole lot of springs to establish a tank. If you don't have frogs in there they multiple pretty quickly. If you feel like driving out to Moreno Valley (about 30 min) I could give you some as well. Just PM me. Believe it or not those 30 springs you have now will be more than enough to seed your tank. Hold back a few and start another culture. Feed it with some rice grains or sprinkle in some fish flake and they will make another culture for you. If you have lots of hungry frogs they will sometimes eat down your seeded tank too much. Its hard for me to keep my Cobalt tank seeded because all they do is eat them all day long. But once your culture is going well you can just pour in a little each week. With most frogs this is not really a problem unless the tank is really small or you have a lot of frogs in the tank. Once your tank is well seeded you can go on vacation leave a little piece of banana in there and your springs and misc fruit flies and isopods will seek it out and that food source will help to sustain your frogs.