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Aqua Natural

Aqua Natural Aquarium Substrate, Diamond Black Fine Gravel, 10lb

  • Based on 2,560 reviews
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Availability: In Stock.
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Arrives Wednesday, Oct 21
Order within 10 hours and 41 minutes
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Size: 10LB


Features

  • Aquarium Safe Material: 100% natural composition ensures safety for all aquatic life
  • Beneficial Bacteria Support: Promotes good bacteria growth because of its large surface area
  • Visual Contrast: Contrasts well with a planted tank to enhance the appearance of your aquarium
  • Premium Quartz Composition: Natural quartz gravel sparkles underwater due to light reflecting facets, creating an attractive substrate
  • Fine Grain Size: 1-2mm particle size provides optimal coverage and plant anchoring in aquariums, fish tanks and terrariums
  • FINE-GRAINED TEXTURE: Graded to 12 mm, Diamond Black falls between sand and traditional pebble gravel for a fine, natural-looking substrate.

Description

Quartz Gravel is the Rolls-Royce of our range. Natural Quartz not only looks wonderful but has also been shown to help reduce the build up in the aquarium. This is partly due to the huge surface area of quartz which offers added space for the establishment of tank cleaning bacteria. Quartz sparkles underwater due to the many light reflecting facets and is a striking substrate that contrasts well with aquarium plants such as anubias and amazon swords.

Product Dimensions ‏ : ‎ 12.5 x 10.63 x 2.5 inches; 10 pounds


Manufacturer recommended age ‏ : ‎ 1 month and up


Item model number ‏ : ‎ DIAMOND010


Date First Available ‏ : ‎ December 28, 2020


Manufacturer ‏ : ‎ Pisces USA


Best Sellers Rank: #5,984 in Pet Supplies (See Top 100 in Pet Supplies) #6 in Aquarium Gravel


#6 in Aquarium Gravel:


Customer Reviews: 4.5 4.5 out of 5 stars (2,560)


Item Weight: 10 pounds


Manufacturer: Pisces USA


Item model number: DIAMOND010


Date First Available: December 28, 2020


Item Package Dimensions L x W x H: 12.2 x 8.82 x 1.73 inches


Item Dimensions LxWxH: 12.5 x 10.63 x 2.5 inches


Brand Name: Aqua Natural


Target Audience Keyword: Fish, fish


Directions: Rinse until water runs clear, place in base of aquarium. Not reccommended for snails or bottom feeders.


Model Name: Diamond Black Quartz


Color: Black


Size: 10LB


Material: Stone


Age Range Description: All Life Stages


Care Instructions: Rinse lightly to remove any residual dust.


Number of Items: 1


Style: Classic


Included Components: 1 x 10lb bag


Specific Uses for Product: Aquarium Substrate


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great product, just don't expect "black" black
Size: 10LB
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 ... show more
Reviewed in the United States on August 4, 2026 by D. L. Jones
    • It's sand, not gravel.
Size: 10LB
Review Image by PMB0706
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
Reviewed in the United States on September 26, 2026 by PMB0706
    • It's magnetic.... 🤷♂️
Size: 10LB
Review Image by C. Manno
Review Image by C. Manno
Review Image by C. Manno
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... ... show more
Reviewed in the United States on September 7, 2026 by C. Manno
    • Clouded Water
Size: 10LB
I did not have a great experience with this product. One thing to know is that it wasn't entirely the product's fault but somewhat my fault. This product was called "Gravel", and it is very different from gravel in the sense of size. The individual pieces are similar to sand, and it clogged my filter, and even know I am going back and forth from the sink filling up buckets to dump into the huge tank to the keyboard. This is a real nuisance. That part was a bit my fault for not being more careful and a bit their fault for not being clearer. However, that was not the only problem. The product says triple washed so I did not rinse it off before putting it into the tank. I probably should have though because it clouded the water terrible and pretty much turned the water gray. On a better note, before I redid the tank it looked prettier than ever with this stuff at the bottom. I recommend pairing this in a freshwater goldfish tank with sinking driftwood and lily pads/water lettuce or water hyacinths. This product was also very easy to use by simply cutting of the top corner to pour. This product also had a surprisingly good price to weight comparison. To conclude I had an alright experience with this product ... show more
Reviewed in the United States on August 2, 2026 by Steven F. Herr
    • Better than expected
Size: 10LB
Review Image by Anthony Walker
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)
Reviewed in the United States on October 7, 2026 by Anthony Walker
    • Beautiful coarse sand
Size: 10LB
This is not fine sand nor is it small gravel. It's large sand. It is pretty easy to work with unlike sand and is easy on the bottom dwellers unlike gravel. Naturally colored it will bleed out a little while preparing. I did several rinses and soaks over 2 days before putting in the tank. It sparkles under the light but with no glare. vacuums pretty easily, you will get some up the tube but just let it sink to the bottom of the bucket, pour out and pinch it back into the tank. Simples. Would re-order again. This is the only thing IMO that competes with Carib Sea Supernaturals Peace River which is the perfect substrate in all situations. Just hard to fine and boring in color. ... show more
Reviewed in the United States on October 3, 2023 by John g
    • Good product
Size: 10LB
Good I’ll plant some beautiful plants
Reviewed in the United States on September 28, 2026 by Johel Mendizabal
    • Does what it’s supposed to and like good I. The process
Size: 10LB
Perfect consistency for Cory’s slight coarser than a true sand but close. Color is a true black with “sparkling “ crystal dispersed throughout. I did need to rinse before adding to aquarium but I did so about 3lbs at a time. And after only a few minutes was able to add to an existing aquarium by using a solo cup to transport it to the bottom and spread it out over my existing gravel with no noticeable change in water clarity. Yes a few stray grains floated around for a few hours but the water remained clear and I was never concerned about harm to the fish. In the end does what it’s supposed to do at reasonable price and looks good doing it ... show more
Reviewed in the United States on January 29, 2026 by Dan West

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