Yah I've got 5 fighting conches, they're pretty awesome at keeping any sort of macro algae at bay, but they won't touch dinos or cyano. I've pretty much only got 3 kinds of algae in my tank - cyano, dinos, and this small vine like plant with teeny tiny little serrated leaves that only grows in between corals where my tang and rabbit fish can't reach.The cyano recently has been getting a little out of hand and it's starting to drive me batty, which is why I thought I'd try fluidizing the sand to get as much garbage out of it as I could. It doesn't seem to harm any of the sand dwelling life, within an hour of doing it I can see the burrows of tiny worms starting to form again, and it sure makes the sand look cleaner, just not sure what it's doing biochemically...
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