Is my filtration OK for large cichlids?

  • We are currently upgrading MFK. thanks! -neo
If the Oscar is the only fish (as the OP said) then I think a 75 with proper filtration and water changes is fine. One can argue that it might not fully grow to an optimal length as in a public aquarium or the wild, but it can easily get to 80-85% of that length.

The same Oscar as a solo pet in a 500 gallon, might grow 1-2" longer. Health wise, I don't think there would be a difference.
 
Considering that most oscars live their full life in a 55 or smaller and still reach large size, one would think an 18" wide tank would be sufficient. I also hear so many people talk about the huge oscars but never have measurable pics to back them up. Not calling anyone a liar but, I can say I have something on the extreme side or bigger and without pics, well we know how that's gone over before. Think sixty foot shark pond.


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Considering that most oscars live their full life in a 55 or smaller and still reach large size, one would think an 18" wide tank would be sufficient. I also hear so many people talk about the huge oscars but never have measurable pics to back them up. Not calling anyone a liar but, I can say I have something on the extreme side or bigger and without pics, well we know how that's gone over before. Think sixty foot shark pond.


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for once i can say i completely agree
 
obviously you don't read Everything...


I was told a 90 was good for an oscar, so I bought a 90 and an oscar. 2 years later I had a 16" fish in an 18" wide tank.
I wouldn't put an oscar in anything less than 24" wide.

pics or it didnt happen
 
Everyone has there own opinions. But realistically a 75 or even a 90 is grossly small for an adult oscar.

I have a friend with 2 12" oscars in a 140 and they looked crammed.

I dont see why people get *****ed at for housing a 2ft fish in a 6x2x2. But those same people say a 75-90 is ok for a 12"+ fish. Other then biological factors. Its the same damn thing.


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