every tank is a little different but i notice a change in my corals in my 55 gallon tank after about 4 gallons of evaporation but not real bad.i also have a 29 gallon sump 3 quarters full
_________
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 |