The perfect reef tank?!

[SunnyD123]

Hello. I have a 20g reef tank and ultimately I want it to be set for success. I kinda wanna incorporate a star fish and maybe taking out the snails? Or a diamond watch goby to help the sand bed? As of the moment I have 4 snails and two hermits for my clean up crew. I also have 3 fish. A black clown, a damsel, and a pigmy Angel. If you have any questions or want to see more, watch a few update videos I posted on my YouTube.

 

[j.falk]

The tank is too small for a starfish. It would slowly starve to death.

 

[Jseimo]

To small for a star, they’re hard to keep even in well established large systems. May be to small for a diamond goby. I’d consider one of shrimp gobies since they stay smaller and won’t starve. Get a conch to keep the sand clean

 

[wonroc]

get micro btittle stars

 

[j.falk]

get micro btittle stars

Those aren't going to keep the sand bed clean which is what the OP wants a starfish / goby for.