Maxi jet 1200

Are you looking for a pump to feed a filter or for a circulation pump to create current in the display?
The MJ series work well for feeding a filter in an all in one type system where it has a hoses attached to the nozzle while the Koralias are designed to move large amounts of water in a wide flow pattern. Two different pumps and uses entirely.

 

Im looking for a pump to feed a filter for circulation ...

 

Filtration and circulation are two different things. The filter pump pushes water through a mechanical filter like floss, carbon and foam. The circulation pump usually sticks to the displays side or back with suction cups or a bracket and moves water around without any sort of filter. Two different things.

I assume you have an all in one type nano with some sort of false wall or back with some filter media inside? If thats the case then there is a filter pump feeding it. The Koralia would not be behind the false wall, it would be inside the display just moving water around.

 

yea I have seen them, thats what I have a filter pump behind the wall..

 

Yes, that's a filter pump. The AIO systems use it for a small amount of circulation, but it's not a pump specifically meant for "circulation".

You don't want a pump bigger than the one you have now. Get one the same size, because more water movement isn't what your filtration is built for. You need to keep it around the same rate as your old pump.

To get more circulation, get a Koralia or a similar powerhead; don't try doing it by upgrading the back pump.

 

So upgrading the back pump is not good for my tank? it won't filter the water faster and be better for it? would using both of them not be a good idea?

 

"Filtering water faster" is not a good goal. It ignores that the filtration equipment was built for a certain flow rate, and will work best only at that flow rate. For instance, take your carbon as an example. Carbon needs slow flow rates. Increase your pump size, and the carbon won't be as effective. It'll work that way for nearly any filtration equipment.

You can use a powerhead on top of your current setup, but get a replacement for your back pump that is approximately the same flow rate as the one you have now. Don't go bigger.

 

ah I see ok. that makes sense ill check into what mine is then