I sew a post on Band someone praking down tank and selling of all his rocks 90kg for £45 so i said i have it i sew photos of it lookd gd it has a larg lether on it rest was sold. I juat have fhis and a clener srhimp atm. And the guys said tbe rock will seed my tank. It finly came and its got 7 aptaja on and after diping i removed 10 babby brisul warms. Iv all so haveing a red slim out brak rocks been in syins munday but iv been in hospital so just got home to this.