Newby hatching questions

[krishenschel]

Sorry for sounding dumb, but here goes. Is it necessary to have one of those water wiggler things to put the temperature probe in?
I built my incubator out of an old cooler using gopher boys design. I have the same thermometer hygrometer that he used. I am not sure the right place to set the thermometer and probe. right now it is taped to the egg tray between the eggs and the probe is laying on the opposite side of the tray. The temp readings are rarely the same, with a bigger difference when the tray is turned toward the light bulb. Yes, the light bulb is shielded. The temp vary by as much as 3 degrees. What am I doing wrong?

 

[gabrielle1976]

I hope someone who knows more can answer you soon. but I would guess that is one of the reason people have water wigglers cause if the tmep fluctuates a few degrees but the wiggler basiclly stays the same you know the inside of the egg isnt changeing as much as the out side. Good luck.