I tried black sand with a small tank once and found it just too dark.
I recently set up a 90 gallon with a dark blue background and white sand and found the white too bright and showed debris too much. After a few days I switched to light tan pool filter sand and I love it with my current tank lighting. Sand is tan/white but not glaringly white.

I recently set up a 90 gallon with a dark blue background and white sand and found the white too bright and showed debris too much. After a few days I switched to light tan pool filter sand and I love it with my current tank lighting. Sand is tan/white but not glaringly white.
