We change ours every night, for each tote of six chicks. At three weeks they move to an outside brooder, and we do use chips or shredded paper in that.
That's what we're doing with our next batch, coming this weekend, but in the past we've gotten chicks in early March. Good weather this time of year, but early March - can be harsh around here.
Wow! That's pretty slick. Is it glass or plexiglass? I love that you can see the chicks so clearly. Where did you get it, what's it called, and did you buy the top separately?
We used to brood our babies in something similar, and it works pretty good for a couple of weeks. But it's not very tall, so before long they are hopping/ flying over it. I didn't mean to be critical of the color, it just struck me as funny. Ours was white/ yellow. The chicks won't care.
We only change water and feed, and clean the breeder (we use totes) at night, after they settle down at night. That way it doesn't seem to traumatize them. I wear a little head lamp with a red headlamp.