Quickrete hydralic sure is. No ph affect it uses thorite for quick set. Basically it's a lot like what Marco rocks uses. Heard it from mr Wilson lol. But yes look him up on reef central or do a search on web you will get a lot of results for it. It's even a grey color blends in great
anyone have any extra acrylic rods laying around? Think i could find them at a hobby shop? I like the idea of using some rods at least for the base few levels of rock. By the way, is the quickcrete safe for salt water?