Most reviewed
Aqua Natural Diamond Black Fine Gravel
4.5 · 2,555 reviews
$14.69
Sold and shipped by the online store behind the button; bags go back the same way
Natural quartz graded to 1–2 mm — between sand and pebble. The facets sparkle underwater, the black contrasts with plants, and the large surface area gives beneficial bacteria room to settle.
Product highlights
- 1–2 mm natural quartz
- Sparkles underwater
- Anchors plant roots
- Large surface for bacteria
- 10 lb or a 4-pack
Bag sizes and prices
| Option | Price |
|---|---|
| 10 lb bag | $14.69 |
| 10 lb bag, 4-pack | $54.34 |
Specifications
| Grain | 1–2 mm |
|---|---|
| Material | Natural quartz |
| Colour | Black |
| Use | Aquariums, fish tanks, terrariums |
Good to know
Fine gravel lets you push stem plants in with tweezers and they stay — coarser gravel needs root weights.
Orders and returns
The order, shipping and any return are handled by the store that sells it. See how orders travel.
Reviews by real customers
Great product, just don't expect "black" black
My favorite brand of substrate, comes pre washed so I don't have to worry about that. Just know that it isn't solid black. It looks black in the bag but once you get it I'm your tank and add water it's more like a speckled look, I'll see if I can find a photo. But good none the less. I might try some of the other colors since I know I won't get that black color I was looking for. But I'll still use the same brand
D. · August 2026It's sand, not gravel.
I like this. I thought I was buying aquarium gravel but this is what arrived. I went ahead and tried it and I really like the looks of my tank. Very happy with my purchase
PMB0706 · September 2026It's magnetic....
Nice black sand/gravel but the strange part is that it's magnetic. While using my magnetic scraper to clean my new tank, I found it was getting covered in gravel. They did require several washes and still left a film in the tank while filling it. It's not BLACK BLACK and does have some other colors mixed in, but it's alright. Looks good though. Just strange that it's metallic...
C. · September 2026Better than expected
Really good, didn’t clump, caused a very minimal amount of fog that cleared within 10 minutes of filteration, I love it!!! (Photo is mixed with other substrate)
Anthony · October 2026
Beach pebble
River bed
Jet black wet
Natural pink