I covered part of the viv with shrink wrap and it got to warm and the humidity when through the roof. I have taken it off now. Plants arrived this morning and put them in and have ordered an intermittent timer for humidifier. At the moment the temp is 23.4 and humidity is at 66% which is fine. Although is does drop still after humidifier goes off but the intermittent timer should help that as it has 1 minutes intervals, thanks all. ;0)