Can you make a shelf in your tank?

I was wondering if you could make a shelf in a tank.

I have my 60g tank with a footprint of 4' by 1'

I would like to put a shelf in say 1' to 1.5' from the bottem.

I could use PVC pipe to hold the shelf up, but not sure what to make the shelf out of. I would like the shelf to have a slight lip to it, and I would make the pvc pipes little lower in back so it would tilt slightly. and then put substrate and some live plants on the shelf.

Is there some other substance I could use other then Glass for the shelf though??

Was thinking I could put some LED lights under the shelf to light parts of the alcove as needed (not sure how dark it would be under a 6" shelf). would support the shelf on each end and middle with pvc pipe, with holes cut in for caves, or laying on the side as tonnels.

yes yes.. I have to figure out what to make it out of first, something that wont hurt the fish or the plants,

then can make it and post pic's, and even a thread of what I did.

Will epoxi work which I have, it says it is fine under water after it cures, or do I need to get the pure Silicone?

ummm how would you make it hang on the back? cant quite wrap how you would do that around my brain.

bah, I plan to add weight to this thing.... a lair of substrate and some plants atleast.

run fishing line from the four corners of the ledge to some hooks I hang on the back of the tank? the two in back bing shorter then the frount....

I still like the PVC pipe idea, use them to make little caves say use 4" pvc pipe with an arch cut in the side so the fish can swim in and out.

there's a local hardware store here that will cut glass for what I need for the shelf, but not sure what to edge it with to keep it from being sharp for my hands and my fish.