Originally Posted by moonbaby4885
Thanks BettaBaby! I'm down to 5 glowlites now but the affliction seems to have dissapeared. I moved the fish into a temporary 10 gal so I could change the water in the 30gal to hopefully prevent the disease from coming back.
If I am understanding this correctly, you emptied the 30 gallon and cleaned it out to start it over, yes? I would strongly suggest you make sure this tank is cycled before moving the fish back into it. With a weakened immune system from fighting off a recent illness and the stress of medications, adding these fish back to an uncycled tank will likely mean the loss of more if not all of the rest of them. I'm hoping the 10 gallon was cycled before you moved them to it?
For future reference, this is not a good idea when treating fish for an illness. Stress is a major cause of illness in fish, and this procedure is very stressful for them. If illness is present in a tank and the proper medications are used in that tank, there should be no concern of a occurrence of the illness unless the medications were ineffective or the wrong medications were used. In both instances, the fish would likely still be showing symptoms of the illness.
For infections such as you dealt with, which sounds like a fungal infection or possibly a viral infection, there is no way to completely eliminate it from an aquarium. Once you begin adding water, fish, food, etc. there are spores present, as many of them are air born. The best way to eliminate future illness is to quarantine new fish before adding them to the main tank, keep water parameters in check (0 ammonia, 0 nitrite, and nitrate under 20), and avoid stress as much as possible for the fish. Stress weakens the immune system which leaves the fish vulnerable to a wide range of issues. With a strong and healthy immune system, a fish is normally capable of fighting off these problems before they take hold and cause a problem.
I will do what I can to help you, but at this point, making sure the 30 gallon is fully cycled before moving the fish back is the best thing to do.
Also for future reference, its is best to seek advice from someone who knows about fish illness and the medications to treat it before using anything in your tank. Malachite green is a very harsh medication and is not safe for all species of fish, such as corys. Adding a wrong medication can be deadly to sensitive fish, as you have found out the hard way. If this illness was viral, the medications would have done nothing to help the fish, only cause more harm. Viral infections will clear up on their own and the best thing to do is to keep close watch and keep the tank conditions in good standing.
Sorry for your loss, I hope things get better now.