i have my four boys in 5 gallon tanks and my girl in a 3 gallon. her tank's lamp became a hazard, so i removed it and keep an eco-lamp on next to her tank instead (and that's the side the algae loves.. gee, go figure). i have a mossball in her tank, one in Simon's and one in Louie's and they don't seem to make much difference at all. actually, Louie's tank gets hit worse than Kido's. i do not
want to use the chemical algae remover in any of my tanks, so that's not an option.
i'm going to pick up a few more Amanos today.. i'll try 'em in with Simon and Roxie, since those two are the most laid back of the five. when the algae's tamed down, i'll swap tanks. change of scenery for the kids and safer for the shrimp.