I wouldnt put a sea slug in a 10g tank. he will quickly run out of food and they like to roam. i have a seahare in my 125g and I have to supplement his diet with algae sheets. he also can get into powerheads and filters and turn into mush.
Why the desire for a sea slug? Any particular reason? I happen to like how ugly mine is it makes him cute to me. lol
Also they grow pretty quick. I;ve had mine since early this year and he was the size of a large marshmallow, he is now about 6 inches or more in length.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.