Tidal Marine Substrates

Anybody have any experience with the tidal marine substrates from seachem, my lfs just got some and the aragonite comes in like three different colors (yellow, grey, and brown). I was just wondering if anyone had tried it, and if so what their opinion on it was.

I'm not familiar with that particular brand, but I would stay away from any colored sand. There are certain sands that are naturally colored, but the color is regional. There's black sand from Hawaii and..... I forgot where, but it's called Moon Sand. Also, there is pink sand and a couple other colors. But these are not man-made; they are naturally colored by volcanos in Hawaii and other things that I can't remember. I know I'm not providing a lot of information, my memory keeps failing me. Some people use black sand in their reefs but there are disadvantages to this: Light is absorbed more in the black sand as opposed to being reflected by white sands; any particle will be obviously apparent and will make the sand look very dirty. I am thinking about setting up a freshwater tank with this black sand, or maybe putting it in my nano, just because I think it would look cool. Don't get these 'colored' sands from your lfs. They are artificially colored and will foul your water and eventually fade.

Anybody have any experience with the tidal marine substrates from seachem, my lfs just got some and the aragonite comes in like three different colors (yellow, grey, and brown). I was just wondering if anyone had tried it, and if so what their opinion on it was.

Actually, I have seen this SeaChem stuff at my LFS too. The different 'colors' are each marked with a region where they are apparently taken from. I am not sure if the region is there just so you can try and make your reef like a particular region (e.g. man-colored) or if they are actually from those areas and thus naturally colored. I would look into it further if you really want the different colored aragonite.