Aqua Natural Diamond Black Aquarium Gravel, 20-lb bag

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$25.19 (-30%) Chewy Price
$35.99 List Price
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About This Item

Details

  • This aquarium gravel is sourced for optimal pH levels, ensuring stability for aquatic life and plant roots.
  • The sleek and lustrous black appearance adds sophistication to any aquarium.
  • A fine texture looks great and encourages natural behaviors in fish.
  • Covers a large surface area to promote the growth of good bacteria.
  • Perfect for aquatic plants and creates a stunning contrast in planted tanks.

Ethically Sourced Rocks and Substrates

From iconic dragon stone to finely graded substrates, Aqua Natural aquascaping materials are ethically sourced from around the world and chosen for their beauty, texture, and tank stability.

Iwagumi Substrate Style

Inspired by Japanese aquascaping, Aqua Natural Iwagumi substrates bring harmony and beauty to planted tanks, with ideal grain sizes and natural color blends to anchor stunning minimalist layouts.

Bio-substrates and Filter Media

Aqua Natural bio-substrates and filter media come pre-seeded with beneficial bacteria to support healthy tank cycling. Perfect for new aquariums or boosting biological filtration.

Natural Beauty for Aquariums and Terrariums

Create stunning aquascapes and terrarium displays with Aqua Natural premium natural decor. Featuring real rock, driftwood, and substrate, these products bring the raw beauty of nature to your tank—perfect for fish, reptiles, or plant-only setups.

About Aqua Natural

Aqua Natural is a brand of Pisces USA, offering premium aquascaping materials and foods. Ethically sourced from around the world, their products help bring the beauty of natural underwater environments to life.

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4.0
Rated 4 out of 5 stars
20 Ratings
Terms & Conditions

10 Customer Reviews

Rated 4 out of 5 stars
By Yen on Sep 24, 2025

Very good sand!

It is not really gravel, but sand. So, I don't like sand because it's so tiny in an aquarium. However, it's very black, clean, and shiny. I wish it were gravel

It is not really gravel, but sand. So, I don't like sand because it's so tiny in an aquarium. However, it's very black, clean, and shiny. I wish it were gravel. I will give a 5-star rating. Highly recommended!

Rated 5 out of 5 stars
By Matthew on Sep 19, 2025

Was perfect consistency

The product was as described, black sand. It was well washed and ready to use. Works perfectly as a substrate

The product was as described, black sand. It was well washed and ready to use. Works perfectly as a substrate

Rated 5 out of 5 stars
By Summer on May 4, 2025

Originally expected gravel

This sand makes my glo fish pop, they were not yet in the tank at time of this picture but I think it’s very nice, still originally ordered because it says and is

This sand makes my glo fish pop, they were not yet in the tank at time of this picture but I think it’s very nice, still originally ordered because it says and is advertised as “gravel” but was definitely sand. Still wondering how hard it’s going to be to clean this hoping not too difficult however they did send me a replacement and said they would make sure it was gravel. Fingers crossed that it comes as gravel this time

Rated 1 out of 5 stars
By Sarah on Apr 8, 2025

Sand!

I bought this because the stores near me didn't have GRAVEL in plain black or in bags any larger than 5lbs, but even though the listing says multiple times that

I bought this because the stores near me didn't have GRAVEL in plain black or in bags any larger than 5lbs, but even though the listing says multiple times that it is gravel, this is definitely sand.

Rated 3 out of 5 stars
By Madison on Apr 1, 2025

Beautiful but not gravel

Original listing had this as gravel, however, the grain is super fine and a sand like consistency and doesn't match the gravel version of this product I have used

Original listing had this as gravel, however, the grain is super fine and a sand like consistency and doesn't match the gravel version of this product I have used before. Lovely sand, but not what I needed unfortunately.

Rated 2 out of 5 stars
By Lily on Jan 17, 2025

hole in bag

i’m not sure if this was meant to be a smaller hole for air to pass through but it definitely let some substrate escape during transit. i’m grateful for the paper

i’m not sure if this was meant to be a smaller hole for air to pass through but it definitely let some substrate escape during transit. i’m grateful for the paper Chewy puts in their shipments or the mess would have been worse but still a little disappointed.

Rated 2 out of 5 stars
By Alicia on Apr 18, 2025

Not what is listed

The listing states gravel. The image shows gravel. I got sand. Not even what is pictured.

The listing states gravel. The image shows gravel. I got sand. Not even what is pictured.

Rated 3 out of 5 stars
By Margaret on Feb 26, 2025

Sand or gravel?

Not a gravel but a sand. Beautiful but now what I was looking for.

Not a gravel but a sand. Beautiful but now what I was looking for.

Rated 5 out of 5 stars
By Stephen on Feb 21, 2025

The color of the gravel

The black gravel is a we to come t Pop my fishtanks

The black gravel is a we to come t Pop my fishtanks

Rated 2 out of 5 stars
By Karen on Sep 8, 2024
Top 1000 Contibutor

Sand, not gravel

I ordered this thinking I was buying gravel, as that is what is listed and pictured, but what I received is sand. I suppose it’s good sand, if that’s what you’re

I ordered this thinking I was buying gravel, as that is what is listed and pictured, but what I received is sand. I suppose it’s good sand, if that’s what you’re looking for. It isn’t what I wanted, though.