ok first of all i should introduce myself. My name is Lisa. I have a 50 gallon octagon fish tank with a variety of fish in it. 3 guppies, 4 platies, 4 phantoms, 1 clown loach, 1 red eye tetra, 2 red tail sharks, 1 gold gourami, 1 silver gouramis and an algae eater. i have had them all since last...