I have three nest boxes in my coop for my 12 gold comets,I bought three of the 10 gallon size blue plastic storage containers from dollar general,I cut out holes in the center of the lids big enough for my hens to go in and out,then I turned them us sideways,,bolted 2=4 braces across the lids and screwed the lids on tight,the screws go through the rim on the outside of the boxes so theirs no danger to the chickens,then I placed the boxes on 2=4 frames and screwed them to the wall,,I placed one on the floor and the hens refuse to lay in it,they lay very well in the one stacked above it and the one beside beside the one that is stacked,,will I need to move the one from the floor or will the hens start using it too?I read that I need one box for every four hens,I have six hens laying as of today,,five eggs in one nest box and one egg in another,should I move the lower box to the same height as the others? to encourage the hens to use it