ZBR Smooth Operatorhardy and a fast grower when it is given stable parameters. The big three parameters to keep stable are Alkalinity, Salinity and Temperature. Ensure this frag is placed in areas with high flow and high light.Suggested parameter ranges ( Please don't target numbers everyones tank is different, stability is key.)PO4 0.05-0.15ppmNo3 0.25 - 10ppmAlk 6.5- 10ppmMag 1350-1450ppmCal 400-450ppmSalinity 35