Thank you all for your responses. I am not a seasoned vet at this nor am I what I would call a newbie either. I have tried the different things such as covering the whole incubator with a blanket to try and even the temps, placing something in front of the fan to deflect the air flow, placing extra tubs on the racks to fill the incubator.

It just seems to me that with the probe dangling 6 inches in front of the fan, I will get around a 3-4 degree temp difference from top to bottom. Too much in my eyes. I know there will be a variance from level to level and also as the eggs mature, the inside temp of the tubs will vary.

Right now I have moved the probe to the middle rack, have a tub of newer eggs on the top rack, older eggs on the middle and empty tub on bottom. Helix set at 89 has the ambient on both levels at 88.3 (varies a little depending on time of day)but a degree difference inside the tubs with the newer eggs being warmer than the older.(swapped thermometers and still the same) This is working better than before when I would get a 2 degree difference on the same level from side to side and 3-4 degrees stepping down. Although to achieve this I still have to put a 'block" in front of the fan to deflect the air.

It should work for me this year but even now I couldn't "fill" the incubator and keep in specs for all bins. Just trying to find out what others are doing.

Thanks again.

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