Is it possible for my brand new hygrometer to be off by 30%?? When I filled my water wells...all of them I couldn't get the humidity past 49%. Then I put 1 tbs of salt in a shot glass with just enough water to make it look sandy but not watery. It hasn't been 8 hours, but the humidity has been staying under 49% the whole time. Should I return it? Its called Accurite or something and its an indoor/outdoor thermometer/hygrometer. It has a sensor you can place outside for a separate reading, but the piece itself is for inside. Anyone use one? Getting panicky again! LOL My husband has little faith in me and keeps saying this is a bad idea cuz I'll kill them all. I can't grow house plants and my geckos laid eggs and all died after doing everythjing I researchd. Soooo...I want this to be perfect and prove him wrong!