Hello! I have a very tall C&C cage because I have a small room in a mobile home and instead of building out into my room, I built up. The bottom layer is open so I have room to put stuff underneath. Above that, I have a 2x3 grid cage with a 1x2 grand loft for my two females. Above the loft, I have a 2x3 grid cage for my smaller boys. The boys are babies and this is a new and bigger cage for them so they?re going nuts. They are running laps and pop corning. I?m glad they?re happy but it?s extremely loud and they like never stop. They also shake the whole cage, including the girls under them. I feel bad for the girls. They are usually quiet when it comes to bed time, but last night (their first night in the cage) was wild! I couldn?t even fall asleep! Also when they bounce around I can see their weight pushing down on the plastic cardboard we use. I guess I?m just worried about the cage falling apart or the boys (they love to climb) climbing out from such a high distance? I also worried if they?re disturbing the girls. The girls don?t act like it?s bothering them, but I know the noise is bothering me! Thank you lol.