I've seen a super filled with 6-1/4" frames fill over 80% in 2 weeks, I guess that would equate to a deep frame at about 2 days, they can get awfully industrious when the urge hits them. I couldn't answer how often would be checking too much though; I figure if you're close to an event, checking back may be ok. Keep in mind I'm starting my second year, and I'm sure someone will have some more tried and true rules to go on. (I honestly hope that on my tenth year I will be mindful that I have more to learn).