So I bought a used saltwater setup about a month ago, already cycled, fish already living in it. It's a 55 gallon with MH lighting and probably around 50 pounds of live rock. The substrate is live sand. I have one tiny mushroom, that's it! I've been adding the vitamins and stuff daily that is supposed to promote coral growth, but still nothing. Do I need to add some more live rock to get my stuff going? When I peak in at night, there's lots of critters floating around and hanging out on the rock, so I know there's life out there, but I want some coral! Could all the hair algae from the previous owners lack of a clean up crew be part of the problem? Thanks for any input!
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