I have a 120 reef tank I have been setting up since October. I filled it with new salt water about 3 weeks ago. I have added approx. 9 gal. of seasoned salt water from my smaller established tank over the same 3 weeks. The sand was washed and the rock was cleaned prior to set up. I also added two small live rocks from my small tank. Diatoms are starting to cover the sand and rock. When should I add a Damsel and clean up crew?



