New 70gal tank setup...

[Tyler_Wentworth_150]

More than 50% will be needed, two 50% changes a week would be more in line

I agree with convict with the variable.mentioned above by Montel. I've maintained perfect water parameters with over filtration even on over stocked tanks. IE, 75 gallon tank with a fluVal fx5 rated to 928gph (~700gph with my custom plumbing and media) by the factory and a aquaclear 75.

 

[DBLN8]

It's not only about "over filtration" at some stage here soon these fish are going mature and start either beating on each other or beating on their tank mate's if he's lucky/unlucky enough for them to pair up.
Even if he is "over filtered" in a 75 gl tank with 2 Oscar's he's going to be doing twice weekly WC of 75% nitrates will be thru the roof after a week.
In order for Oscar's to really thrive they need nitrates to be as low as possible, when nitrates get to 20 it's time to change a lot more than 15 gals of water.

 

[Tyler_Wentworth_150]

Well done mentioning an overlooked detail thus far. Violence will likely ensue at some point, the fish appear to be at the size when they could turn on each other

 

[kljovax]

I think one 50% water change or two smaller 30% water changes a week would suffice. What kind of filtration are you running?

Two altman filters. Forgot model??? Water is ok about 5 -6 days, depends on food.

 

[kljovax]

Thanks everyone for advices. I will do my best to keep these guys healthy.

 

[kljovax]

 

[kljovax]

 

[kljovax]

One post after a while...

 

[justarn]

You should have spent that money on a tank for the Oscars.
Basically your gonna be in an even worse position, why share a 75g tank on here containing a load of future monster cichlids?
You've already said you can afford it upgrade.

Hang on I'm just gonna share my horse that lives in my garage....

 

[kljovax]

You should have spent that money on a tank for the Oscars.
Basically your gonna be in an even worse position, why share a 75g tank on here containing a load of future monster cichlids?
You've already said you can afford it upgrade.

Hang on I'm just gonna share my horse that lives in my garage....

I found new home for Oscars...