Thanks so much for the previous two postings - it's great to be part of such a helpful community! I did find a post on the sea slug forum regarding feeding which suggested that they eat bryopsis (which I had heard), chaetomorpha and caulerpa as a last resort. There was an algae pack advertised on ebay comprising the last two sorts but I thought there were differing views on whether caulerpa is a nuisance algae. Also, I thought a multipack might look a bit overpowering in a 60 litre biorb!! The reason I posted the question here is because I had already looked through the sea slug forum and initially didn't find any answers. When I have got my slug on a suitable food I will post a reply, but as you say roka, it's hard to tell whether he is actually eating what he is attached to! I did notice that he found a small amount of hair algae on a leaf but he didn't seem to have eaten any and promptly fell off - this is quite a regular occasion in my tank with the sea slug
Marine inhabitants never cease to amaze me. My cleaner shrimp got into a bit of a fight with a large aiptasia today, I think they were competing for a brine shrimp. The shrimp pulled away sharply and proceeded to feed on a dried mosquito which happened to fall into the tank. Urgghh. Yesterday, he tried to eat a whole food pellet, clutching it with all his might, even though he couldn't fit it in his mouth!! He really is a character, even tries to nibble my hand when I am rearranging the tank. I'm interested to know what happened to your sea slug, roka. How long did he live, what killed him? Thanks again - will keep you posted, pardon the pun!