i had a coral beauty with ich.atleast thats what it looked like.i have a dart fish in a 75 gal does this mean my tank is contaminated?i had this tank running for a year and had no problems but a sea cucumber wiped out most of my fish so i am starting over.i dont think i acclimated the coral beauty long enough or maybe i bought a sick fish.i dont want to buy fish if they are going to die