Two of my hermits were sparring and I noticed the do something pretty smart... it grabbed a stone and used it to plug the opening to its shell. Might have been a total fluke, but I was impressed 

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I've always had Fiji pink in the past and wanted to try something new this go around. I like the black sand. It really drives your eye to the corals and I do find it hides unsightly diatom blooms and detritus very well.I see in your pic icecool that you've got black substrate. Do you find it easier than lighter color subs to keep clean?

