Split fins reef tank

[vpustovoytov]

Does anybody knows why my fishes have split and bitten like fins. Is it vitamin deficiencies or something else.

 

[oldbones]

Can you list all the fish you have in the tank?

 

[hedgedrew]

You using carbon. ? What kind ?

 

[karimwassef]

Do they all have it? Do you have big crabs?