Clone tent humidity question

hi

I have a tent with two trays and root riot cubes and no dome. The tent is temp and humidity controlled but I keep having trouble with drooping cuts that results in death if I don't water them.

My question is on day one what should the humidity be and by how much should I decrease it each day to encourage roots to grow. Please give me percentages so I can plug them into the system. Also keep in mind I can make that tent 100% humidity with no probs thanks to some small fans and a diy humidifier. Current temp is at 75-80. I'm just having trouble getting a routine down so I'm using technology to do it for me

70-80%
They don't need watering, they need spraying/misting daily for the first few days. Reduce the RH lower after a few days if they don't wilt. They don't want strong lighting.
Everyone has different methods though

Have a read though this, you might pick up a point or two that helps.
http://www.growweedeasy.com/cloning-marijuana-guide

I clone in clear containers with close to 100% humidity Cuse I use a heat mat. The heat mat dries out plugs or cubes within 24 hours so I need to drench cubes Dailey until roots show. In my experience if the medium dries to a dry spunge and no roots there gonna wilt. 70-80 is probably better humidity range but I have roots in 10-14 days with no mold so I don't feel like changing anything.