[souffle]

I have seen tank toppers made by making a frame of wood. like a rectangle that fits round the top of the tank then staple or pin wire mesh or weldmesh on to the top of it. It should then slot down and sit on top of the tank so there are no rough edges the hammy can get at. You can tape over the stapled edges. Attach adhesive velcro to the glass and the other bit to the wood to hold the top in place.