I have a 70 gallon, fish with live rock and sand, running for about 2 years, 1 protein skimmer and pump.
This is my brothers tank and he had to leave offshore to work and his eel has been acting sluggish. It is a snowflake moray eel and it does'nt eat when I try to stick feed it. Also, it keeps opening its mouth and it appears as if it has trouble breathing. Prior to leaving he treated it with pimafix and melafix. Prior to leaving he asked me to do a water change, add carbon back to the filter amd turn on the skimmer.
My questions are
Do I have to mix salt with the water that I add to the tank? how much salt per gallon?
Can the eel be fed live grass shrimp?
What would possibly cause the eel to be sluggish and breathe heavy?
I have a test kit but the colors are in good range except for the nitrate level, how do I lower it?
Thanks for any help