Wanted to let you all know that I put a small Japanese Moss Ball in with my Hawaiian Red Shrimp about 9 weeks ago and it is doing great. The shrimp love picking it over for the bio film. No sign of brown algae on ball or other stress. In fact, it looks fluffier from them cleaning it every day. Something new to try for those with brackish water as I have not seen the "moss" as being listed for this anywhere. Although I did read that a pinch of salt would help one suffering from brown algae in a freshwater set up.