
Originally Posted by
Hellsrage
If you make the vent holes 2" round or somewhere around that, the most she is gonna do is stick her arm in. If you have a spray bottle, use it on her any time she jumps on the tank, it may take a while but she should get the idea. My kitten too use to sleep in the sink but I have yet to meet a dog or cat that likes being squirted by water, hell my sisters dog LOVED water but he had an absolute fear or my misting bottle.
I'm not sure about glass but my home depot/lowes sale acrylic sheets of varying thickness and size, you could use a sheet or two of that instead of glass but be warned that it scratches easily. So if you care about that it may not be the best choice. As for getting glass/acrylic cut to size for you, I would check and see if you have a local place that sales glass. Then you could have a piece cut to exact size by someone who knows what they are doing, lowes/home depot employees will cut stuff to your dimensions if they can but they may not be quite as accurate as you may want.
If you do buy an acrylic sheet and drill holes yourself I would look up a good guide one how to do it because if you don't do it right you'll crack the plastic.