Traditional slow and low is 225 degrees.
I smoke at 250-275.
Below is a guide, you will have to adjust times based on how fast the ribs are cooking. Some things that can effect your cook: temp of smoker, amount of fat, the amount of meat, quality of the meat......etc.
3hrs in smoke ( bend test to check. When you grab the ribs length wise with tongs to about half way point on the rack. They will bend to about a 45 degree angle. Then foil)
2hrs in foil (you will see the tips of the bones as the meat shrinks, maybe about 1/2". They should be tender, but able to pick up without breaking) some test with a toothpick. They will stick the meat and when they feel little or no resistance they are close to done. I personally never have done this.
1hr in smoke to set the glaze (depending on how far along your ribs have cooked, it may be much shorter.)
AKA 3:2:1 method
Trigg method as in Johnny Trigg?
During foil he puts brown sugar, parkay, tiger sauce and honey. He will put meat side down in this wrap and place back in smoker. I have pictures of this in my link.
Hope this helps.