Just added Caribsea Instant Aquarium Tahitian Moon Sand (black) to my tank after it was bare bottom. The goldfish haven't been fed yet but they instinctively knew how to sift through sand for food. It's gorgeous and softer than I thought so won't hurt the fish's mouth but they aren't swallowing it either. No cloudiness and no washing required, just empty out most of the water, add sand then fill back up. I love the sparkly bits! :D
Available for 15.99$ at Amazon or Petco online
One bag for 20g recomended but I used one bag in 55g..seen it used in a 75g as well.
Starring 2 Calico ryukin, redcap oranda, random fantail in 55g w/ 110, 50, 20 filters
Honestly regular brown play sand is my favorite
Flourite® Black Sand is a specially fracted stable porous clay gravel for the natural planted aquarium. Its appearance is best suited to planted aquaria, but may be used in any freshwater aquarium environment. Flourite® Black Sand is most effective when used alone as an integral substrate bed, but it may be mixed with other gravels. Gravel modifiers such as laterite are not necessary. Flourite® Black Sand is not chemically coated or treated and will not alter the pH of the water. Flourite® Black Sand is good for the life of the aquarium and need not be replaced.
Imagitarium Black Aquarium Sand | Petco
Thanks! Im thinking about changing to a black sand, I'd be willing pay for black aquarium sand, but I have a TSC near me. I think I'll buy the black diamond first and if I don't like it I'm only out less than ten bucks.
Black Sand Substrate? - The Planted Tank Forum