I use the Tahitain Moon Black Sand in my tank. It was more difficult to set up than gravel, but now it is easier to maintain than gravel. When it's dirty I can use a turkey baster to suck up the waste that sits on the surface. It does take a while to settle if it gets disturbed, but I found ways to add water during water changes to make sand disturbance a minimum. So far I love sand way more than I loved gravel.
Just make sure your sand doesn't say it's good for coral reefs or made from aragonite. Those sands are just for salt water tanks and can screw with your pH a bit. The sand will be obviously wrong for fresh water tanks because the bag will say stuff like, "Bring the sea to your livingroom" or "Nutriants essential for your coral growth." As long as the bag says it's good for fresh and salt water fish (and doesn't say anything about coral), you will be fine. I figured I would put that out there since I made that kind of mistake when I was looking for sand. Then I lost the receipt and couldn't return it for the right sand. I learned my lesson the expensive way. XD
Edit: I didn't notice your link until after I posted a reply. Since you are looking at the sand I am using, you can ignore half my post. Your tank's pH will be fine. Also that sand really brings out the color of my bettas. It should look very nice with any decore.
Last edited by SnowySurface; 09-26-2011 at 12:07 PM.
Reason: click on the hyper link after writting a reply.
Sand is much better in my opinion. Its classy, easier to clean and the dirt just sits on top, all you have to do is rake it every few weeks. Also if you have a goldie, sand is even better because they like to sift through substrate looking for food. Smaller pieces of gravel can be swallowed causing impaction in the digestive tract. Sand is more easily passed.
This is a good sand tutorial: http://www.redearslider.com/forum/vi...hp?f=6&t=17268
I use sand in all my tanks, and I love it. It's very easy to clean! Everything just sits on top, so you can just go over it with a vac and suck everything up. No need to stir up anything. I also think it looks better than gravel, more natural. Definitely will be using it instead of gravel in any future tanks :)