Thanks Man I love it too! Took me a while to find.bro that substrate looks friggin amazing!!!
Yes it will be safe for your Tigrinus, a buddy of mine has an RTC and is using this substrate. I have personally seen my Polys eat it on their food and they are right as rain.Always have loved the look of garnet. Will this be safe for the belly of my 20" Tigrinus & ok if swallowed? Thx
Also, here is some food for thought, the Japanese consider crushed garnet as the "STANDARD" when it come to substrate for bichirs and they have been using it for ages.
Here is a close up of the CGS: