or something else

Hey everyone I have a possible sponge issue that I'm trying to figure out a way to kill and or remove them without messing up the torch at all. I ordered some stuff on an online auction site (Aquariums Wholesale) and when I received and opened up the package to get ready to acclimate and dip the...

What would be an ideal second tank? I am struggling on going for a the frag tank, pico reef, or a bigger upgrade. I really like the lagoon open top tanks from reef casa, it is an AIO style, going for their pico reef with a small scape and invert only. Or a frag tank dedicated to frags and...

I only saw this guy today when I came home, there’s only one of them, but I have corals in the tank so I’m a little concerned if it’s an asterina. I’ve attached photos for reference, but if it is an asterina, what should I do with it? I’d feel bad if I had to kill it. Thanks for all your help!