Just wondering those of you out there with successful pico/nano tanks what your tips for success are. I gave up on my pico, converted to a spongebob themed freshwater tank. 4 gallons seems too small to get the appropiate flow rate and lighting...even for softies without $400, which I don't want to spend on a little tank in my bedroom. I'm quite happy with my 12 gallon setup, just wondering what your stories of success (or failures have been. Chime in!