I am bringing home 4 ducklings today and am struggling to get my home made plastic tub brooder to 95 degrees. I am using a heat plate. Initially we were planning on putting it on our bottom level of our house which has the most room. It is the coolest level of our home. The 1st day I tested it out I hit 95 degrees but this was prior to the pine shavings being added. Yesterday I could only get it up to 78 degrees. I added a heat lamp and it only rose 88 degrees. I moved the brooder to the laundry room with plate and still couldn’t get 95 degrees but when I added the heat lamp it rose to 133 degrees! Help! Is it usually this much trial and error? Do I have a faulty heating plate?