Polaris_Rider
Aquarium Advice Apprentice
Hi i have a 55 gallon tank with 2 oscars and 1 pleco king and the other day i upgraded my tank filter to a rena xp3 filter and ever since my oscars haven't been the same all they do now is just stay right under the surface at the top of the tank all day and night and open and close their mouths and they won't eat either they never did this before and i do not want them to die please help i'll put a picture so you know what i'm talking about.