[phantom45f]

I just picked up a new Emperor 400 for my 55G. Can I just replace the exisiting filter (it was a smaller one, not an Emp). Would this be a problem or do I have to run both at the same time. I am assuming that i can just replace it without a problem since you have to replace cartridges in your power filters all the time and there is no cultures on them?

 

[piranha 13]

You should put your filter cartridges from your old filter into your Emperor 400. If they don't fit into the Emperor 400 than run them both for a while.

 

[WebHostExpert]

I have these filters, take out the gray trays in the emporers and more the filter pack all the way towards the tank, then put the used filter media in behind them, they will fit in there plenty of room.
MAD

 

[phantom45f]

thanks guys

 

[ezlife]

It really doesnt matter cause your tank is already cycled right?

I have a 55 and emp 400, i also have a regent aquatech 30-60 that came with the walmart "kit", with both filters running, its amazing!! i would say run both of them. Then again i dont know what kind of fish you have or how many, etc.

 

[Grosse Gurke]

It really doesnt matter cause your tank is already cycled right?

It is not the tank that is cycled, it is mainly the filters. The bacteria that make up the cycle are mainly found in you filter media , there is some in your gravel, on driftwood, ect.. but mainly in your filter media, so you should never just change filters because you will loose too much bacteria and could uncycle your tank. At least this is my understanding of the cycle.