Ok Looks Like My Design Had few flaws so modifications was needed.
First off Water directly on Heat element=Bad Idea... They accumulate way too much heat and then radiate it so temp was impossible to control.
Differences between thermostat reading and thermometer was reaching 3-4 degrees with was totally unacceptable...
I remove everything and change steps.
Pipe frame is going now directly on the floor... Then first egg-crate with fan with is blowing Air on heat tape not into incubator. That way circulation of air is more even. Then we have water bottle. they dont lay directly on heat source just accumulate heat from air around so they basically stay same temp as rest of incubator.
Then we have another Egg-crate - shelf for egg-boxes.
As thermostat probe placement. is directly above the fan... that way measuring ambient temperature of air with is sucked by fan and blow on heat tape...
I have thermostat set up as 87.5 temperatures measured by Accurite on shelf level is 88 Infra red gun showing me between 88.3-88.5
Hopefully my mistakes and corrections will help You guys in your future builds.
Enjoy.
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