Black Diamond sand safe?

do a search. there's plenty of info with pics of glass shards.

Look into using architectural floor or pool coatings such as Estes PermaColor Quartz or CAS AquaGems. I use the Estes TrowelRite size in all my tanks and buy it from N.T. Ruddock in the Cleveland area. Black runs about $20 for 50 lbs last time I bought it.

Use the Search feature for more details on these two products as there has been quite a few posts.

deeda said:

Look into using architectural floor or pool coatings such as Estes PermaColor Quartz or CAS AquaGems. I use the Estes TrowelRite size in all my tanks and buy it from N.T. Ruddock in the Cleveland area. Black runs about $20 for 50 lbs last time I bought it.

Use the Search feature for more details on these two products as there has been quite a few posts.

Click to expand...

I ran the older version (colorquartz) in the smaller grade and it's a great substrate. works good for plants too.

I have 100 lbs of black diamond in the tank with my Fahaka puffer. She buries herself with just her eyes poking out and I haven't had any problems.

Black Diamond and Black beauty are coal slag. The MSDS for coal slag makes me feel like I'd not want it in a tank.
Here is what "Coal Slag" is. It's not a manufactured product, it's a waste product with a varying partical size and chemical composition.
Also, the "sharpness" of each batch is completely random. Some is more smooth, some has long strands of glass. I'd not put it in with fish that sift sand. It's basically just pulvarised glass in texture, sorted by partical size.

3. Composition / Information on Ingredients
MSDS # 68476-96-0

Coal, slag

Constituents

CAS Percent
Silicon dioxide 41-53
Iron oxide 7-31
Aluminum oxide 17-25
Calcium oxide 3-15
Magnesium oxide 0-4
Potassium Oxide 0-3