I'm specifically talking about Styrofoam incubators and their issues. You really can't compare that to a brinsea. Dry is for the little giant types only. That's not apples to apples lol
You should try another run. No water both vents out. At lockdown both plugs in to keep the moisture from the hatch in but still no water. Just to see can't do any worse I think you'd be surprised
Still or forced air? I ask because I'm not convinced your humidity reading was correct. Or in other words too high I understand what you said however with that large of a chick i SEE high humidity. I may and could be wrong but it's just what I see with a chick that looks like it was too big to...
Ok thought it was gonna be Styrofoam
What brand and type ie: mechanical, digital hydrometer did you use and how much water if any did you use in the channels