New Tank Isn't Going Well =[

[MewMew42]

after setting up my 33 gallon with a precycled filter i added 6 bloodfins and 5 serpae tetras

i noticed that the serpaes were overly agressive and they killed 3 bloodfins as well as 2 of themselves overnight once i put them in a breeder =[ i promptly removed them and returned them to the shop where i got 5 penguin tetras instead

now one of the penguin tetras can't swim properly and is looking sickly ive removed him but i dont know what to do =[

is it just really bad luck? or could it be some disease brought in by something?

ps water quality is spot on

 

[Piltdownpaul]

I would do a large water change-there could be a contamination in the water-maybe something poisoning them possibly.

 

[MewMew42]

okay i shall do, i havent done anything differently than when i set up my other tanks, i never spray anything near the tank the only thing i did differently is that i added some Cycle....

other than that its time to stop going to that lfs...

 

[Piltdownpaul]

I'm just thinking that if there is a pollutant then diluting the water cant do any harm. But even so,you might just have a sickly fish. Check your water stats tomorrow i reckon

 

[MewMew42]

indeed, thanks for your help!

unfortunately the penguin tetra died =[