Amazingly awesome, help me build

[Oohkris123]

I saw these on Instagram and I'm now fascinated with these and now I want to do my own, i just don't know what material is safe

I've done this before with broken beer bottles with great success but never with decor help me choose a type of decor.

 

[Dilan Patel]

It depends on the design you want to do. Glass is safe,PVC, and aquarium epoxy used to make fake corals is all reef safe and alos Concrete if you can make a mold and pour it into to it.

 

[bergenholtz]

One idea is to find a model and 3D print it with pvc. You can do this on-line. Check out thingaverse for models or create your own. There are various print services if you don't have a 3D printer as most folks don't. I have done in for a few aquarium related things. Worked out. The cost is commensurate with the size typically.