i'm using just a bit more than half a tsp a day of seachem carbonate powder for about 70gallons.i was just concerned cause i've never had to add such a large amount of anything to my tank before.by the way the tank seems to be responding well to the higher alk.all accept some zoos and an open brain.
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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 | 
