Wait so it's gonna be divided horizontally? What are you using to support it? And are you planning on doing water features on both levels? If so, I'd definitely reinforce that barrier pretty heavily. I'm sure you have a lot of the details planned out I'm just nosy lol. I'd love to see the plans/ sketch if you have em handy. It sounds like an awesome project. Keep us posted if you find any cheaper alternatives to shields all. I'd love to do something in like that in my display tank, but that's wayyy out of budget.