modular

Just noticed this article for a modular coral wall system. Was curious what other people thought of it and if it is worth it, or do people just use superglue etc? I like the idea of having GSP on the back wall on my overflow, however, I'm unsure how often I would need to trim it to prevent it...

I've been designing some modular frag plugs that have removable attachment points. These can be printed in PLA or ABS which I've read are safe for salt water. I haven't seen very many designs out there for 3D printed plugs. Is there a reason people aren't using 3D printed plugs?