Thank you all so much!!! I do have a remote thermometer in the brooder under the light, on the floor, right now it is at 90 F exactly. I fussed with the light and the doors for ventilation and temp. Holding steady at 90 right now. The remote thermometer is in front of me as I type...

, I just keep it with me. Love those remote thermometers! They are at 1.5 weeks now...let me know if this is right...
I will test each end of the brooder (right now) to see if temp varies, if not, I will move light to one end. Right on thanks! I don't like that light either, and considering strongly fashioning the heat pad as Blooie suggests...
For me, it is 50 percent peace of mind and 50 percent raising them right so they are healthy and as friendly as possible...
And yes they LOVE the shiny things!! The silver ribbon is their favorite...
I put down outdoor moss (a couple clumps) and they have been busily distributing it around the brooder...
Also I hope this discussion helps others who are using a bathtub...