Over the past 3-4 weeks ive attempted to introduce 3 different butterfly fish into my main tank and after 3-4 days EVERY single fish seems to die.
4 weeks ago i introduced a racoon btfly. A day or two after introduction starts go into a mini convultion, then dies. Then 3 weeks ago i got a coperband. The same result. BTWN 2-3 days after introduction it goes into mini convultions/spazzing out while swiming and then dies out around day #4.
2 weeks ago I ended up getting a 18w UV
sterilizer hoping that it would kill the ich (which i was hoping it was). Now i ended up getting a Kleins btfly and it seems like its going through the same process. Its started to spazz out while swimming every couple of minutes.
This whole time ive had a yellow tail damsel in there as my first fish and the tank has been up for 3 months.
IF this btfly dies too, im going to take the damsel out. Would an empty tank (except for a starfish, emerald and cleaner shrimp), kill out any bacteria in the tank??