I'm new to the saltwater hobby. On Sunday I set my biocube 14 up Sunday with lr and ls and have been testing all week. Ammonia, nitrate and nitrite have been non existent. I just got back from my lfs and he gave me 3 damsels to start the cycle. Is he blowing smoke? I've read damsels will start the cycle but is 3 too many? I've also had some diatom bloom starting. Any advice to keep me safe?