Does anyone know where I'd go to have custom glass tops for my 180gl tank? I don't like the "lite-duty" tops that I have and I happen to have a heavy duty arowana growing in the tank
look up glass in the yellow pages and see if you can find a shop to custom make them
You can also go with 1/4" lexan, an aro would have a very difficult time breaking that (obviously it would have to be weighted)