Search results for query: *

I use 6 small lamps so if 1 blew out, I still have 5. In your case, 2 is enough.

With 5 or 6, 40w is good enough at 15-30 celcius degree

It depends on how many chicks. 15-30 celcius, you only need small lamp like 40W or 60W if you have under 10 chicks. My chicks (70 of them) are a little over 2 weeks old and they are in a shed where outside temperature can get under 0 celcius with under 300w of small lamps.