i have a 45 gallon tank with a snowflake eel, a trigger fish, and a toby puffer fish, also a few corals including a pulsing xenia, now ive been hearing mix things saying protein skimmers remove everything coral needs to survive, now im not into getting a reef tank but i do plan on getting simple corals that dont require much attention or light so its easier for me. can i keep my protein skimmer or is it doing more harm then good?