Sorry, haven't done it before.
I would do nothing less than cover the whole bottom of the tank, to reduce any risk. If the bottom is 100% supported, and there is a slice of weight distributing material, such as styrofoam between the glass and the tank stand, then the weight of the water column is not an issue. If it were a front, side or back plate, then I would say replace for sure.
I would do nothing less than cover the whole bottom of the tank, to reduce any risk. If the bottom is 100% supported, and there is a slice of weight distributing material, such as styrofoam between the glass and the tank stand, then the weight of the water column is not an issue. If it were a front, side or back plate, then I would say replace for sure.