I do check the temp on the Broder floor. I use as indoor/outdoor thermometer. It has an outdoor sensor that we placed in the coop and an indoor sensor that doubles as a digital display. The first two days we kept the handheld display with us as went went throughout the day and made tweaks to the night of the heat lamp until we were at 90-95. We hare raised it a bit more to maintain the temp now around 85 and will keep adjusting for -5 degrees every week.Just curious, have you checked the temperature on the brooder floor below the lamp with a thermometer? Also, you should keep lowering the temp by 5 degrees each week.
Here is an option for winter water. It is for adult chickens, which yours will be by winter 2018. Baby chicks still need surface access water.
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Love the indoor/ outdoor thermometer. Grabbed it for $10 at farm and fleet.
Thanks for the suggestion on the winter water. We do have a jar waterer right now for the chicks, but that gets messy and I am going to strive for less puddles in the coop. I would hate for one of our birds to get hurt from slipping in a puddle - plywood floor of the coop could get slick I am sure when wet. I am considering cutting a hole in the coop floor and covering it with hardware cloth. I have seen pics of this in other cops recently. Then I could put the water over the hardware cloth and any dropping or splashing would fall through to the dirt below the coop. Seems like a safer solution.