I have a relatively new 30 gallon setup with marine sand. I have had 3 parrots, 3 catfish, 3 tiger barbs, 3 rosey barbs, and 5 glow-fish (the bright pink ones that look a little like neons) for 4 weeks now. I added a plecco 3 days ago.
I tested the water and my nitrite level is within the " stress range" . This evening I noticed that two of my parrot fish are getting black spots on their fins. What is causing this? How do I treat this? Should I add tetra EasyBalance with Nitraban, or should I just do a partial water change and add Stress Coat? Should this fix the problem?
Also, I am going out of town for a week (leaving an auto fish feeder)so should I wait until I get back to treat the black spots so I can monitor the water conditions? This is my first aquarium of this size, and first time to have parrot cichlids.
I decided to add 20ml of Stress Coat just now. I am very worried about all of my fishies! I need help A.S.A.P. PLEASE. I leave on Friday.