Zoas are stupid easy to frag when they grow out on acrylic, assuming they don't grow down into a hole. If they grow into a hole, you'll need to break out the scalpel. Other than that, cut your pizza slice in the mat and scrape the mat off the smooth acrylic.why the preference?
For frag racks, do you prefer acrylic or eggcrate and why?
Acrylic -- looks a lot nicer, and much sturdier (well, if build right). Built in magnets on a lot of them also!
Acrylic. It looks nicer and if something overgrows the plug it is easy to make another frag.