start up new filter question

[RoryM]

Tank specs: 66g running one aquaclear 70 HOB filter
Question is if I was to put another 70 on the other end of the tank which is brand new with new media, would I have any changes to my water parameters once the new filters media starts to colonize? I just dont want to have an ammonia spike...

[seetharam]

It would not be a problem, But do not take off the old filter.

[AvianAquatics]

Probably will be fine but if you are paranoid then change some of the media or sponge with an old one from your current filter.