Death :(

[tweedz]

i have had about 6 or 7 orange platties in the past couple of weeks and they have all died! after each one i have changed 50% of the water and added tapsafe etc and they just keep dying!
i also have angelfish, neons, red eye tetras, zebra danios, plecko, red tail shark and 2 blue platties.
i havent seen any of theese fish bothering them i have no idea of whats going on.. any ideas?
thanks

 

[Sofia]

Have you tested the water? It would help if we knew the size of your tank and the water parameters so that we can rule out anything that is wrong with the water or if you are overstocked.

Basically the questions we need answering are:
What are your water parameters?
How big is your tank?
How long have you had the tank for?
How long has it been cycled for?
Did you notice anything on the fish that could be causing their deaths? Any signs of disease?

If you don't have a test kit, take a sample of water to your lfs and get them to test it and write down the results.