sea slugs?

[Bryckitall]

are sea slugs ok, for reef tanks?
we got a white one that has grey on it.

 

[greenbean36191]

It really depends on what kind you have. There are a few thousand species. Nearly all of them have very specific diets though and won't last long in a reef tank. Those that do find enough food to make it are generally predators on things we try to keep alive like corals.

 

[Packersfan21]

I would only reccomend lettuce sea slugs.