Sorry for the really late update:(. Well, none of my opae`ula got pregnant or had babies. They are all red, and seem healthy because of that. I feed my shrimp every Monday, Wednesday, and Friday. I also had to take care of Tony's opae`ula because he had to go on a trip. Also, I don't think I have to replace my water yet because it is still near the top, and it seems okay for now. The water is clean, and is clear. Lastly, I cleaned the top of the jar which had spirulina on top of it. There is a picture of my tank below. See you in April!