What is the water parameters of each tank? Sound like something is participating out due to low or high ca,mag, or alk. Compared to the fresh Salt Water make up. Ran into the same thing when switching back to Tropic Marin from TM Pro Reef. The regular versions Calcium was some much higher it did the same thing in my 50 gallon, but not in the 20 gallon. So I just got my level closer to the fresh mixed salt and it went away. |