I have a home made bator using the heating element from a LG bator i have a triple fan installed and a turner. My last hatch was 100% and I didn't have much for temp fluxes at all. Well of course I have eggs in for my dd's science experiment and I swear the thermostat has gone haywire! Spikes and drops, ughh........We will be lucky if any of the eggs hatch. Very frustrating! Maybe some day I will afford an upgrade!