I have tried to wire the fan onto a dimmer as well as a power source that changes from 6V to 12V...neither of which work. The fan is either on or it's off. I was told to put a fan in this size of incubator because it's pretty large. I just worry about a temp gradient if I turn the fan off. However, all the egg boxes are on the same level, so I'll shut off the fan and see if I can stabilize temps. I'll also play around with the thermostat probe and see if I can't get temps to be the same across the board. I have a $50 temp gun so hopefully that works well enough! So far it's been pretty accurate when I test tub temps.
My biggest worry is that I'll cook my eggs! I just want healthy babies at the end of this! In the next year I'm going to be buying a Nature's Spirit or a Hot Box incubator. I'm not very good with DIY builds and this one is already stressing me out!
Ugh. So frustrating! My first clutch is due on the 29th and the next hopefully the 2nd week of August. Both virgin girls. Hopefully I'll get this temp thing straightened out so I can incubate my little eggs without too much stress!