first,you need a thermostat just for the inc,prode dead center in air,not on the tape,2nd,i wouldnt use a humidity gauge,as the humidity in each tub will need to be emasured,so 5 clutches would be 5 of them,,,so,,just dont use them,use the substrate as instructed and you will be fine.and for a window,i would do double window,cut your hole,2 peices of your plexi,trace the hole with sealent,put plext against it until it bonds,making ti air tight,would do this on the inside,and again on the outside,sandwhiching an air pocket between the 2 for insulation