The only time I ever took the buckets apart was when I was feeding out 50 meaties. Had to drain off a little because I was dishing so much out of the bucket that I was running into the water with my scoops. Trust me, if I still had to drain a 5 gal. bucket out each day, it would be done at the coop and not from the house.
When I first started this, I was draining off feed because I had to empty almost that whole bucket in a day's time on meaties but still retain enough of the fermented water in the bottom bucket to inoculate the bucket full of fresh feed that was being added. All that water was very valuable and full of the rich cultures. I had to ferment almost a whole 5 gal. bucket of fresh feed by the next day but I really wanted it to be a rich ferment.
Does that make any sense?
Now that I'm only feeding 10 birds, I just mix my feed thicker and I'm not feeding my whole bucket of feed each day, my feed gets to sit longer in the fermented water and cook well. I don't need to drain it to avoid feeding out my good cultures in a soupy feed...I can just mix it to my desired thickness and feed it like that. Got plenty of rich fermented water now to go around, so I don't drain it off at all. Just keep less soup in the bucket.