if you don't want live rock,you can get tuffa rock thats very porous and has caves carved in it rather than lava rock.tuffa will even perform some filtration.some nitrates will be consumed in its pours.live rock does it better though.good luck.
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55 gallon reef with 4x54 watt t5,29 gallon sump,red monti cap,1blue echinophyllia,trumpet,red lobo,2 toadstools 1purple and 1neon,gsp,xenia and yellow xenia,red ,many mushrooms,2 giant frilly shrooms,cabbage coral,yellow polyps,many zoos,1 orange and one neon green nepthia,duncans,cladiella |