Thanks for the fast reply!
I cleaned it with reverse osmosis water, made sure that I didn't clean the bio medium too much.
So water change?
Thanks
Damien
URGENT
Just cleaned my canister filter and now the silver dollars, silver shark and clown loaches are in a bad way.
Now the bristlenose catfish are darting around the tank!
PH 6.4 - 6.6
Nitrate - 0ppm
Nitrite - 0ppm
Amonia - .25
Help me please!