livewell ???'s

Howdy.I have a 2000 ranger r93,that has just 1 livewell but with
the divider.My ? is that it only fills up about 4 or 5ins. deep.
The aireator sp... seems to work fine it just won't fill up with water.I didn't get a manual with this boat and I'v always made my own livewells so I just don't understand how it works I guess.
Also it has a switch under the gear control box that has "recirculate" "empty" and another one that I can't think of right now?? Can someone please help this bassboat dummy out?
Thanks for your time.

Put the selector under the gear box on empty and pump the water in using the Manual switch...after it gets full (to the level you want it) put the selector switch on "recirculate"...then use the "automatic" switch or "manual" switch to recirculate the water per your desire. If you use the "automatic" switch to recirulate the water you can adjust the timing switch to recirculate the water at the timed interval you want.

Dave,Thanks so much! I figured it was something like that.Guess I didn't take the time to figure it all out.Boy I feel so stupid right about now!! LOL Would that kind of info be in the manual?
IE:plumbing,wiring, bilge,ect. Again, thanks for your time.

Should be in the owners manual but not sure if it is.