My personal 3D printed multi level egg crate blocks with air vents for better sinking and zip tie holes.
Every Block is made from 100% reef safe filament
Color: Standard Black
Outer Supports are used as the end support for the frag rack but you can always use them in the middle for support.
Middle Supports are specifically made to join to egg crate racks together in the middle.
Every support will be made to order and understand larger blocks will require multiple days to print.