My fish keep dieing

[MonsieurLaGrenuoille]

Hello and good luck!

 

[itiwhetu]

My tank is 150lt
Tank mates
6 Cory dora
10 Cardinal tetra
11 Guppys
2 Swordtail
4 danio
2 platy's
2 algae eaters
Tank has been running for about 6 months.
Everything was fine until I got the sword tails,

PH 7.4
Ammonia 0.ppm
Nitrite 0.ppm
Nitrate 0.ppm

Canister filter
Upgraded filter media with biohome ultimate, ( no carbon)

Your tank was 250 liters in the first post now it is 150 liters?

 

[itiwhetu]

This is the type of medication thread I really hate. Stop. Take a deep breath and start again. What have you got in your tank? 100% sure then treat that. Don't just throw stuff in your tank hoping you will cure what you don't know you have.

 

[75gallon]

Your tank was 250 liters in the first post now it is 150 liters?

Typo 250 ltrs