I had both extremes. the cheapest 4" I could find for the hatcher and the dust overwhelmed them after about 18 months. I then bought the highest 4" CFM I could find. They were so powerful, I didn't have a power supply large enough to run 4 of them. I split them and run 2 at a time with a toggle switch.
Would that be big enough to hold a Hovabator turner?
I want to make one for the Old Folks Home behind my house and I don't want to trust them with hand turning.
I'll have to look for one at a flea market or craigslist since I refuse to give Walmart any money.
I've had good luck with them. There is a slightly cheaper version
that doesn't have as precise control I used in the hatcher but I'm replacing it with another STC-1000 and use the old one in a brooder.
I've used a couple similar to the following shipped from Bulgaria that worked precisely but they didn't last more than a year or so.
I haven't used this one but it does have a digital display
I may try this one that ships from the US.
That would be great but hawks usually avoid the place now so I haven't seen the activity in a long time.
I occasionally carry a camera but it would have to be someone that can dedicate weeks to laying around watching for an attack.
I'm sure you're right. I thought of that but I haven't raised them. So I didn't recommend since I didn't know how well they play with other chickens. I guess Shamo and Malay may fit the category of not playing well with others.