I just went and picked up my first fish, i have a coral in another tank and i was waiting to put him in my big one while it cycled. my nitrate is at 20ppm. the guy at my lfs says that 20ppm nitrate is good and i shouldnt do a water change. but the people ive talked to on this forum suggest it. i believe my coral is a yuma but i honestly have no clue. i only have one light is the problem, so should i move my coral and turn on my light? or just put my fish in with no light while i find another one.