You can do it!!! For many years I avidly followed the GARF website and kept saying “some day” to this DIY build or to their 500:
We teach coral farming online so that we can help save the coral reefs from over collection. Learn to grow coral. As people see reef aquariums they will become interested in saving the coral reefs
www.garf.org
they give cut lists, instructions & everything
And I planned eventually to order their “Garf grunge” “reef janitors” and all of Sally Jo’s beautiful corals. But I kept procrastinating.
Now I’ve finally started my reef tank but sadly it’s too late & they have retired.

Lots of the links on their site are broken, but if you google you can still get to the pages even if the links are broken. I’m so thankful for all their hard work and inspiration!