SW noob.... fish is on the brink of death

yaya123

New member
60g, has been cycled for about 2 months. All parameters have been very stable since.... until now.

I added two clowns three weeks ago. They are doing fine. I added an angelfish last weekend. In my noobness I tested water levels AFTER I added the angelfish (1st mistake). I must have done the Mg test wrong. Mg results came up in the 900's. I realize now this is very unlikely being that they were 1200-1300 the week prior. Anyway, I go to BRS's calculator to figure out how much of the magnesium mix I need to add. Long story short, my Mg levels jumped to almost 2000. (2nd mistake- adding all at once) About 4 snails died within the first 6 hours, hermit crabs causing havoc killing other hermits for their shells.... my shrimp were running all over (not normal). they are fine, though.

I then do a water change to lower the Mg levels. I do a salt/h20 mix, but I must have not allowed all the salt to dissolve. So, the SG turned out to be much higher than my measurements. So, now my SG went from 1024 to 1029 after the water change. My angelfish hasn't even been in the tank 24 hours and has been exposed to craziness. Btw, I did acclimatize him properly with a slow drip over about 15 minutes.

Just this morning my angelfish was floating sideways at the top of my tank. He is breathing and responds to me by up-righting himself, but goes back to a lifeless, sideways posture.


Now that you are familiar with what my angelfish has gone through... Now what?

I am not sure what to do. I put him in an acclimatizing tray inside the tank with a tiny bit of water flow moving over the top. I initially took one of my turkey basters and slowly moved water across his body, not to disturb him very much. He responded by going through short phases of swimming to the surface. I left him in the acrylic tray with a little water flow over the top when I left for work this morning. Right before I stepped out I noticed he would swim a little, then go back to the bottom.

I just want input regarding what the ideal conditions are for a fish in this state. I don't believe he was sick when I purchased him.

Thanks
 
Get your water to where it needs to be parameterwise and leave it alone. It sounds like the fish is in shock from all that cataclysmic change. It's totally understandable to want to fix things when they're not right, but stop and take a deep breath, double check your tests and proceed slowly, no matter what the situation.
Best of luck.
 
Patience is key in this hobby. Nothing good happens fast. Any changes you make, make them very very slowly. Remember, the ocean is vast and does not change easily. Fish and marine life are adapted to the ocean, and cannot handle fast changes.
 
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