using multiple client ids in one app

Hello, I need to have multiple redirect uris so I registered and got multiple client_id and secret pairs. When I used one of the pairs, the authentication process worked find. However, after I setup more authenticating points using multiple different client_id and secret pairs, nothing worked, even the first authentication process that was working stopped working. The authentication process was able to launch but it got to a page that was blank with no error msg. My question is: Can I use multiple client_id/secret keys within the same app? What is the best practice when I need multiple redirect uri's for an app?