Recently set up 75 gal salt water with 100lbs LR and 30lbs LS. With the rock and sand came a bulbtip anenome and 11 damsels. Running a red sea prizm pro protein skimmer and c360 marineland can filter. Ammonia is between .25 and .50 and nitrates are about 40ppm. I really don't want damsels but they are probably helping my tank? Do I wait for ammonia to be 0 before I can add the fish that I want? What is the range that I want for Nitrates? I plan on bringing the damsels to the pet store or feeding them to the Dwarf Zebra Lionfish that I want to get for my tank