In all fairness, Paul stands testament to the idea that you can stick just about anything in your tank from the ocean (or harbor sometimes). I'm a fan of Pauls, and I've read a ton of his threads about all sorts of crazy stuff, like how he goes out in the middle of the winter and catch pods under the ice, then feed them to his tank. Also he's got all sorts of awesome memorabilia sunken in his tank, like old pepsi cans and glass bottles and such. He's got such a wicked tank.
If he can catch plankton and pods from the NY area, then we should be fine here, as long as you pay some attention to the tides.