Hi, I am relatively new the hobby and have no idea what is wrong with my puffer. I have a 400L fish only tank which has been up and running for about 10 months and the puffer was one of the first fish in. I have an emperor angel, clown trigger, Picasso, cow fish, coral beauty, maroon clown and a flagfin angel with some live rock and some artificial. I recently added a regal tang who didn't warm to the puffer and gave her a bit of a hard time. After a few weeks I could see it was starting to stress her out so re-homed the tang as she was not eating much and hiding away all the time.
She was spinning around at the bottom of the tank and bumping into things. She would often inflate if we approached the tank.
I also cleaned the tank and did a 30% water change on the same day and discovered I had had a massive nitrate spike. Nitrites and ammonia were both fine. PH was 8.2 and salinity 1.023. I did regular water changes for the next few days and nitrates are now at 20. She didn't eat for 8 days and spent all her time hiding. Her fins were frayed and her tail always tucked to the side. A started to show a little interest in food about a week ago, but nothing like she used to. She never leaves the bottom of the tank and never strays from her den. She still spends all day hiding and I'm worried that she isn't showing signs of improvement. I have added waterlife fin rot and ulcer treatment as her fins don't seem to be healing. I also added a protein skimmer last week and an ozonizer this week.
She was spinning around at the bottom of the tank and bumping into things. She would often inflate if we approached the tank.
I also cleaned the tank and did a 30% water change on the same day and discovered I had had a massive nitrate spike. Nitrites and ammonia were both fine. PH was 8.2 and salinity 1.023. I did regular water changes for the next few days and nitrates are now at 20. She didn't eat for 8 days and spent all her time hiding. Her fins were frayed and her tail always tucked to the side. A started to show a little interest in food about a week ago, but nothing like she used to. She never leaves the bottom of the tank and never strays from her den. She still spends all day hiding and I'm worried that she isn't showing signs of improvement. I have added waterlife fin rot and ulcer treatment as her fins don't seem to be healing. I also added a protein skimmer last week and an ozonizer this week.