I doubt I will switch to the red or purple garnet sand. I will probably leave my black diamond blasting sand that I already have in there. I like it a lot with the overall look of my tank. It also helps keep my fire eels' bodies nice and dark.
Now, I just have to figure out what to do with the goldfish that are in my 29 so I can clear it out to use as my grow out. I really like the size of the 29 for a grow out because it is super easy and quick to do massive water changes on. If only I could change the water on my 220 that quick. Lol