What Is This?

[GoTakeANap]

What is this in my tank? Here are 2 different pics. Im pretty sure its snails and starfish. I dont know if they are good or bad. Didnt put them in the tank and didnt know if I needed to move them to my 75 gallon tank when i take the smaller one down. Tired of fighting the algae in the small one. Here are the 2 pics.

Starfish? Have been more and more popping up over time.

Snails? Tiny snails are have grown in time.

Do I need to move these to the other tank or get rid of them? I know they are a hitch hiker but dont know if they are good or bad.

 

[ritter6788]

Asterina starfish and limpets.

 

[GoTakeANap]

good or bad?

 

[ritter6788]

Just algae grazers. Some debate on asterinas being reef safe or not but I've never had problems with them.

 

[greybolt03]

Limpets are fine the Astraea stars will eat coralline algae and some of the red ones will eat Zoas...

 

[GoTakeANap]

k sounds good. have no problem with them eating corals. all of them are always grazing on algae on the glass. just didnt know if i should keep or get rid of. thanks