Ill Black Moore Goldfish - Help please (urgent!)?

Well all the Bio-orb's i've seen are very small for that many goldfish and thats the problem they are fighting over space. Adult size the goldfish will need over 55 gallons. With a much more powerful filter then supplied with the Bio-orb. So the tank is the problem. He can't stay in there long. Your best bet buy a large tank to house all of them.