Theres Fish in my Cycling Tank?

IMHO you should be cycling your tank for weeks if not months before adding fish!!!!! I would not be at all surprised if all of the fish get ill. Cycling is the time that it takes to build up a sufficient bacteria colony in the water to manage the fish waste. Adding fish to an un-cycled tank means that the waste that they produce is not being removed from the water efficiently and changing the water to keep it clean just stops the bacteria from ever building up. The best thing that I could think of to help your fish would be to get hold of some live bacteria and add to the water to kick-start the bacteria colony. HOWEVER, my knowledge is really in freshwater so may be different for saltwater if you are using live rock etc