Would like some advise. I have removed all my fish from my 180 and would like to focus on my corals. How much do the corals depend on the waste products and hosting from the fish? Am I going to need to dose any additional supplements now that I have removed the fish. Also would it be safe to remove the skimmer. I only have two sand sifter start fish and two other starfish. I usually do a 15 to 20% water change every week. Will I still need to keep changing water as often. Thank you for your advise.



