I got in a hovabator 1588 genesis the other day. I have had it running to try to figure it out some. It has the led digital thermostat and humidity indicators on it, and fan... Then I have the egg turner for it too with quail trays put in. The incubator seems to hold the temp right there + or - .2 degrees as the heating element turns on and off. Seems to be fine... The kicker I am finding it keeping a stable correct humidity... I filled the trays as it said to do, had it going for a day and it stayed around 73% humidity... I then read the fine print and it says to only fill certain trays... so I emptied it out and left it on and it went to 65% humidity. I left the water try empty to let it do down more and got it to 38% humidity... So I am finding out it is very finky with the water you add into it.. and it seems like I really aint going to have to add much water for it to stay in the right area.... but I dont know how fast it will dry out either... From what I can gather I can turn it on, no water in it, put the lid on... it gets to the right temp really quickly... then add a little water into the tray, let it sit for a while, then add a tad more... and so on until it starts sitting at the right humidity... By the way it looks so far it would be overkill if I filled the whole tray.. Any advice on how yall get yours going and get the humidity sitting right?