What kind of rock?

[TechPirate]

I have a half gallon “aquarium”.
What kind of rock can I get for a decent size for them?
Also where do you guys find the larger sea fans?

[Shrimplythebest]

I have seiryu stone and black lava rock in mine. The opae ula seem to like it!

[TechPirate]

Yours are super RED, mine are a bit clear

[Shrimplythebest]

They can turn more clear/pale if they're stressed although some of them are just naturally lighter/pale. Mine were pretty pale when I first got them because of the stress from shipping and moving but most turned nice and red once they'd settled into their new tank. There are still a handful that are pale and more clear so I think they're just naturally that way.