I bought some new corals for my tank yesterday, acans, zoas and a Duncan which have all settled in nicely. Only when I looked at one of the rocks today i noticed that there
was a small object shooting out bursts of a white substance into the tank. I’ve never seen anything like it and naturally I’m slightly concerned for my corals and fish not knowing what has now sprayed into the water. The same object has now slowly crawled away. I have attached a video and have captured 3 bursts. Can anyone let me know what this is and is it something I should be concerned about? Many thanks, Mark.