I have a biocube 32 LED with a current cuc of 7 astrea, 4 cerith, and 5-8 nassarius (I have no idea how many I have they breed all the time), and 3 hermits (1 dwarf red leg, 2 dwarf blue legs). I have a lot of red slime and dust algea still and he hair algea is slowly being eaten by the astreas...