Water Temp?

[oscar1995]

what is a good tempature for a 30gallon tank, where the fish can be calm and active at the same time?

 

[Proxo]

It all depends on what fish you have in the tank!

 

[oscar1995]

It all depends on what fish you have in the tank!

i have jacks and oscars

 

[Proxo]

For the Oscar between 21°C and 28°C. I used to have my oscar in water at 28°C.
I'd suggest around 24°C-26°C though, too hot would mean reduced oxygen in the tank.

I think jacks are pretty similair too.

 

[markandhisfish]

jacks and oscars??? 75g MINIMUM for a single oscar . you need to either buy a serious upgrade or rethink your stocking