Hi everyone I have just joined this forum as I have ordered an 81Litre marine fish tank I have two freshwater aquariums ( 200L and 25L) an I have kept fish properly since I was around 8 or 9 I have never had a marine aquarium before and am just wondering what I need I have a filter ,heater , 3D backround , separate quarantine tank , lights , air pump , thermometers and I am just wondering about anything else I will need I am thinking about stocking with two clownfish but I haven’t done much research yet so this is pert of my research what salt do I need to put in the water and do I need live rock and corals as I am thinking of an anename for the clownfish but I am a total beginner so any help is greatly appreciated ☺