tom,using a efficiant internal reactor,and if plants are going to pearl,how long after lights on before this should accur?how much time is cut by useing the mist method?i am now trying the mist way,setting spray bar vertically with eheim co2 diffuser just in front of spray bar at lower end blowing to other end of tank.inlet of canister is next to spray bar.will this work o.k? regards,cornhusker