3d printing Hydro Halo for 6" square pots

Over the last couple days I've been working with a 3d modeling engineer on Fiverr (because my 3d modeling skills suck) to produce a square hydro halo for 6" pots. We've gone through a couple revisions but here's the latest. It's on the printer now so I'm not positive it's 100% perfect but it should be very close. I'll follow up once it's done printing. I can post the STL file if there's anyone out there into 3d printing that wants to try it. Just thought I'd share.

How many grams weight the piece?

Why 3d print? Is not the same with a perforated hose?