I thought the only time u could dose for just the water replaced was when u dose the new water in the bucket. If u fill up the tank using a hose, ur suppose to dose the whole. Im pretty sure thats what the back of the bottle says. Have I been doing it wrong?
Ok dont confuse this poor guys anymore.......
Its simple you dose for however much water ur adding......if ur filling up a new 100 gallon tank u would use 2 capfuls bc ur adding 100 gallons of new water.......if the tank was already full of 100 gallons and u were doing a water change of say 50%.....u would only add 1 capful when u did ur 50% water change