It's been a while since I've posted on this forum. Here are a few current pics of my shrimp tank:







This is a 2.5 gallon betta tank with a 20W CFL light hood above and air pump with diffuser stone. There are 3 pieces of Fiji live rock, one black Hawaiian lava rock from the ecosphere I rescued them from, a few chunks of generic red lava rock from the gardening store, and a 1/4" thick layer of Hawaiian sand. The water is roughly 3 parts distilled water, 1 part RO saltwater from my aquarium shop, and 1 part bottled Fiji Water, kept at ~80 deg F and 12-14 PPT salinity. Every month I do a half gallon water change.
I started this tank with roughly 20 Opae Ula, aka Halocaridina rubra, aka Hawaiian Red Shrimp, that my friend brought back from Oahu. Half were red, the other half white or clear. Now after 14 months, there are roughly 25+ adult size shrimp, 30+ juvenile shrimp, and 30+ larval shrimp. For the last 3 months there have always been 2-3 berried females.
I feed them twice a week alternating between 2-3 Tetra fish flakes, 1/4 of a algae disk, and a toothpick tipful of spirulina powder mixed in distilled water. I have 2 timers on the tank. The one for the lights turn on at 10am and stay on for 4 hours. The one for the air pump turns on 4 times a day for ~20 minutes. My shrimpies like to play and swim in the air bubble stream and generally wake up and start swimming around when the water starts circulating.
Although many people say the live rock isn't necessary for them to breed, I think it helps tremendously. If you look at pics of my old tank, which was a 1 gallon fish bowl and 3 rocks, there are lots of activity, but now breeding. Once I moved them to this bigger tank and built a house of lava rock with a considerable volume of water inside in the shadows, things changed. The first berried female appeared 3 months afterward, and it's been steady since, an approx 4x increase in population.
In May I move to NYC and I hope they all survive the cross country drive. There I will move them to a new 10 gallon with approx 2x the live rock in a house formation...
Thanks again to everyone who helped me in the past!