The four hives that I bought from a beek all had spacers to make them all 9 frame hives instead of 10.
I understand why 9 frames are better than 10 on supers, and I agree in principle and practice. Much easier to uncap when spaced to 9 frames.
My question deals with Brood. The deep brood bodies also were spaced to nine frames.
Is there any benefit for having deeper cells for brood? I understand that I would need to give them foundation spaced at 10 frames to keep the burr comb down and then once it is drawn go to 9 on the supers. I just haven't seen anything on spacing for nine frames on brood.
Any answers or suggestions would be appreciated.
If the answer is clearly on Michaels website, I appologize that I haven't read it from front to back yet. It is a new year's resolution that I haven't finished yet.

(You are the greatest asset to the new beek, Mr. Bush)
Thanks, Steve