Get them medium stuff instead of the fine stuff. It will settle easier, and wont get stired up as much. Also, just raise your filter intake so its less likley to catch stired up sand. The chance of it causing damage to your filter is slim, you may have to replace the filter prop in 1.5 years instead of 3 years, big deal. I love the look of sand, its cheeer, and it hasnt caused me any problems. If you like the look of it, go for it, but I do agree its a bit tougher to keep clean.