How long should battery minder take, in conditioning mode?

Should have asked this in seven days.

What indicator is blinking what color?
What does the manual say?
What model?

http://www.batteryminders.com/instruction-manuals/

Is the battery disconnected? It may never float if there is a load on it.

Not sure about that brand maintainer in particular, but I'd suggest 2 things. 1st - make sure it is rated for AGM batts - yours may require a different output voltage. 2nd - is there any corrosion on how it is connected to the battery? On my Battery Tender brand, blinking red means no connection, solid red charging, solid green charged. Any such guide on yours? ST