my room temp is about the same. my herpstat nd is at 91 and my hotspots in my racks temp around 87. my reptile basic sweaterbox rack is up away from the floor. they are sitting on other racks. what is the room temp towards the floor in your room. this can be a factor. also how long has the rack been running to get at these temps? what substrate is in your rack? the hotspot should be the tub or newspaper and not the top of something like aspen if it's in there with any depth. I use newspaper in mine. you need to temp each level and slowly raise the temps on the thermostat until you get where you want to be with the hot spot (tub floor) using the temp gun.