Recently (5 days ago) our new orandas recovered from a spell of ich, and we were so happy because we thought that our fish had become well again! However, after a couple days of bliss, we started noticing that our fish were behaving oddly again.
First it was Mandarin, our slightly larger oranda. (Mandarin is about 2 inches not counting the tail; Tangerine is about 1.5 inches long not counting the tail.) He seemed to be having problems breathing. He was breathing heavily, and making what looked like "coughing" or “gulping” movements with his mouth. Now and then he would swim around frantically. He has also lost a lot of color ever since he got sick with ich about a week ago. The ich is gone, but his deep red color has not yet come back.
This happened for a day, and we hoped that it was simply a result of him just recovering from ich, and still possibly having stress in the gills. Our smaller fish was fine.
However, today the problem got much worse. Mandarin is now sitting on the bottom of the tank almost all the time, and is not very active at all. His "coughing" has gotten worse.
I do not think that the problem is a parasite problem, as our tank solution has been at 0.3% salinity for 7 days now. I think that the problem is bad water conditions. (Which probably caused the earlier ich infection in the first place.)
We have bought an ammonia test kit, (AquaPharm, two-bottle) and discovered levels of about 0.25 ppm. We have been doing water changes daily, as part of our ongoing salt treatment for our earlier ich problem.
We tested the tap water, as a control, and found that it ALSO has ammonia levels, higher than in our tank, between 0.25 and 0.5 ppm.
We also discovered that our municipal water supply contains "chloramines." We have been using AquaPharm brand "tap water conditioner" to treat for minerals and chlorine, however, we have not been adding enough drops for the product to also treat for chloramines, as we did not know that we had them in the water supply before tonight.
So... our problem is probably manifold: we have ammonia in our tank water at a concentration of around 0.25; we don't know how much of that is NH3 or NH4+. We probably also have residual chloramines in our tank water, as we have previously not been adding enough product to break the chloramine bond.
Our tank is relatively new, it has been set up now for about 4 weeks. We have two small goldfish only, and a power filter that filters 100 gallons per hour. Salt is at 0.3% and has been there for 7 days. Temp is 77 degrees. We do not know our pH or nitrite levels- we will be buying these kits tomorrow. (However, our water company says the target pH for our area is about 9.)
What can we do to help our fish as fast as possible? Their symptoms seem to be the result of ammonia stress and/or of chloramine poisoning, which destroys their hemoglobin and causes them to become anemic. We don’t want to completely get rid of all the ammonia in our tank, as that might mess up the cycle we have hopefully by now started to establish. Should we add something like AquaPharm “Stress Zyme” which would boost our bio filter, or might this mess up what we already have going?
Please help!! Last week was hell, but we helped our fish survive ich; we don’t want to lose them now because of problems with water chemistry!!! (Who knew keeping goldfish was so hard? We are trying our best!!!)