At their size I doubt it and thats probably why he has the plexiglass in the middle.
That "plexiglass" is actually super thick glass and is sealed with the tank. It came with the tank and I believe acts as a structural brace to compensate for the amount of water pressure from the water pushing outwards on the glass.

i like that sand to, and i also wonder how it's going to go with the cleaning and the turtles wanting to eat it. I think sand would be more authentic, but i dont want to injure them with it. Anyone have any thoughts?
Well, in theory yes, but this product from Exo-Terra is actually from the source... the river. The grain is fine enough to be digested. And by "fine" I mean, these are the smallest grains of sand I've ever seen. It feels like velvet when you run your fingers through the dry sand haha.
Here's the description right from Exo-Terra:
"This is natural riverbed sand with no added dyes or chemicals. It has been sifted to remove impurities and to obtain a homogenous sand grain size. Ideal for many types of aquatic turtles as it is their preferred substrate in the wild. Soft-shelled turtles especially prefer the fine sand for digging and burrowing. Other types of water and ground-dwelling reptiles, such as frogs and salamanders, will also benefit from this sand because of its soft nature. A rough surface, such as gravel, can easily injure the skin tissue. This sand is very fine and can be easily secreted when ingested, unlike gravel or pebbles, which can cause indigestion"
i had heard that sand was hard to clean
It's actually not that bad

I enjoy cleaning the tank so maybe there's something wrong with me to begin with haha.
Great looking set up & Beast looks great!!!
Thanks!!!!