I know this subject pops up a lot, but what is a good hygrometer? I have an Acu-rite with a probe right now, but here's my story. We have cypress mulch and our screen top 3/4 covered with plexi glass. We heat with a UTH and a heat lamp for ambient temps. We're not sure if the gauge is actually measuring correctly? We can mist the probe directly and the humidity never reads above 47-50... You can see that the mulch is wet and right where the lamp dries it out.. We put the probe on the far wet side and still have 45%.? The tanks glass shows condensation on well over half the tank from the previous days misting and still 45% or so.. It does change readings, but it's hard to believe it is that dry in there?