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Aqua Natural

Aqua Natural Aquarium Substrate, Diamond Black Gravel, 10lb | 1-2mm, For Aquariums, For Fish Tanks, For Terrariums

  • Based on 2,437 reviews
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Availability: In Stock.
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Arrives Monday, Jul 20
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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

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: #6,530 in Pet Supplies (See Top 100 in Pet Supplies) #7 in Aquarium Gravel


#7 in Aquarium Gravel:


Customer Reviews: 4.5 4.5 out of 5 stars (2,437)


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


Item Weight: 10 Pounds


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: Monday, Jul 20

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Top Amazon Reviews

    • Beautiful black gravel for aquarium
Size: 10LB
This black gravel looks amazing in the aquarium and really makes the fish and plants stand out. Cleaned up easily and didn’t cloud the water much. Great quality and gives the tank a sleek natural look.
Reviewed in the United States on May 21, 2026 by Aquamac
    • 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
    • Shines like diamonds with black
Size: 10LB
Nice rocks for fish tank. Sparkle is cool in tank and fish stand out with contrast of dark.
Reviewed in the United States on June 21, 2026 by Kim mayberry
    • Nice sand!
Size: 10LB
Beautiful sand
Reviewed in the United States on June 25, 2026 by Karen wilkin
    • Sparkles when dry, not too dirty, does have some lighter rocks in it, but is pretty good regardless
Size: 10LB
To address other reviews: It does sparkle, but primarily when dry. It does say it is quartz gravel. However, when wet/underwater, it doesn't really sparkle much. It's not that dirty of gravel. If you ever buy natural gravel from any brand, it's always dirty and needs lots of rinsing, even when prewashed. Just being moved around, the gravel will grind away on itself and create dust. I'd say that I didn't have to wash this gravel nearly as much as the super cheap stuff at Petco, but i still rinsed about 3-4 times to get it to stop clouding water. It's also kind of in a space between gravel and course sand. It's one of those situations where we have to start debating the semantics of sand vs gravel before we can really call it one or the other. It's very fine gravel, or very course sand. It's mostly a bit smaller than the listing says, as i don't think that many of the pieces are actually around 2mm. There are some lighter-colored pieces in the mix. There aren't a ton of them, but enough that I could see fish confusing them for food or something. However, I doubt it's as big of a problem as people make it out to be. I personally like the black gravel with a small amount of lighter bits, as it makes it feel more natural and gives it more of a visual "texture". I can understand being disappointed if you want all jet-black gravel, but honestly I've never seen any gravel that was entirely black without it being artificially colored. I like this gravel because it's a good size for my pea puffer. It's not as problematic to work with as normal, finer sands, as very few pieces in the mix will float in the water column, even when being stirred/cleaned in a big bucket full of water. I find it attractive and easy to clean. My actual only complaint about it is that it's very pricey compared to many regular sands or gravels. ... show more
Reviewed in the United States on August 23, 2024 by Chuck
    • Beautiful substrate but it’s not gravel. Beautiful substrate but it’s not gravel.
Size: 10LB
Review Image by Carlos
Review Image by Carlos
Beautiful, but not exactly gravel or sand. Kind of in-between which works fine for my use. 1 bag took care of my 10g tank. Another note, if you are looking for completely black, this is not it. There are bits of brownish pieces in the mix (pictured). Lastly, I will say that even though people have said they didn’t rinse before adding to the tank I did and I’m so glad I took the time. During rinses the water was real gray/black and had tons of floaters. I rinsed, skimmed, and drained it till the water was “clearish” which was about 3x. Now it’s in the tank and the water is almost as clear as usual. Great product. ... show more
Reviewed in the United States on September 10, 2023 Reviewed in the United States on September 10, 2023 by Carlos
    • Great look
Size: 10LB
Looks great and makes the color of the fish pop
Reviewed in the United States on June 20, 2026 by JJT
    • Magnetic Magnetic
Size: 10LB
Review Image by Ally surrage
Review Image by Ally surrage
Tbh I thought this stuff would be more sandy. It’s like a wack middle of gravel and sand. Easy to rinse though, but for whatever reason it is magnetic. I learned that with my magnet algae cleaner and ended scratching my tank on accident, so heads up.
Reviewed in the United States on June 20, 2026 Reviewed in the United States on June 20, 2026 by Ally surrage

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