Dear All sifu,

Recently I just moved my tank to my office. I found out that my fish wasn't eating. It doesn't eat its favorite frog for about 3 days.
Then, I found out that the air condition of the office was too cold, causing it uneasy.
So I bought a heater to heat the water, setting it to 30 degrees.

Still the fish doesn't wanna eat,

This morning I was shocked, seeing something like a cut/growth/disease on the fins of my Arowana. Not sure what it is.
It look like a cut but its not.. Its like a skin disease or something. Hope thes images below help.

I have just reduce the water of the tank to 40%, then put in salt and put 2 cups of "tension gone"

I'm not sure am I doing the right thing.

please.


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