goldfish with septicemia
Just realized I wasn't clear.... For example some meds activity may strengthen or change over time etc... So I would check to see how long medicine stays active and it may need to be taken out of the water. Or for example, you have to be careful with epsom salts because each time you add more salts with a water change, the remaining salts in old water become stronger....
Also I meant to say nitrite needs to be zero not nitrate.
I am only one person, I would check other authorities on this advice but I just successfully treated dropsy, hemorrhagic septicemia with a bacterial infection secondary to internal parasites successfully with epsom salts, general cure, furan 2, marycyn 2, erythromycin and kannaplex...... I KNOW that is ALOT of medicines but they were to the point they had dropsy so I thought I didn't have much to lose since they were very bloated with ulcers and bright red..... Luckily they were still eating and I gave them medicated food with antibiotics, parasite meds, and dewormers mixed in it... and it worked!
My son washed his hands with soap over the bucket of water going into a 120 gallon aquarium with six fancy goldfish. So the fish were very stressed by a crisis quick move into a bucket and then a new aquarium. One fish died within 20 minutes but the rest have recovered after a month of nursing from all the above due to the stress. My first successful fish recoveries so I wish you the best....
Also sorry I repeated some other advice earlier for some reason I did not see the moderators and others very helpful posts!