Aqua Natural Diamond Black Bio-Substrate Aquarium Gravel, 5-lb bag

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$12.99 Chewy Price
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About This Item

Details

  • This substrate is made from 100% natural, sustainably sourced materials.
  • Provides a large surface area for beneficial bacteria colonies to thrive.
  • Use this gravel as a primary substrate or mix it with other substrates.
  • Contains bio-activated live nitrifying bacteria suspended in liquid to help maintain a healthy aquarium.
  • Instantly cycles your aquarium, eliminating the need to spend a week cycling your tank.

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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Questions & Answers

2 Customer Questions

Is this sand or gravel?

Answer by Chewy • Apr 24, 2025
This is a substrate made from 100% natural, sustainably sourced materials.

What is the grain size for this product?

Answer by Chewy • Apr 15, 2025
This substrate is 1-2 mm.
Reviews
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4.4
Rated 4.4 out of 5 stars
16 Ratings
Terms & Conditions

7 Customer Reviews

Rated 5 out of 5 stars
By Peachez on Oct 25, 2025

Great

This product works as stated. Giving my bio active aquarium the perfect balance. My plants are thriving as well

This product works as stated. Giving my bio active aquarium the perfect balance. My plants are thriving as well

Rated 1 out of 5 stars
By Sky on Jul 22, 2025

Horrible. What the HeII chewy?

Box came sopping wet and fallen apart. (hadn’t rained all week). Product itself is good but chewy needs to make some serious changes. I’ve ordered way sketchier

Box came sopping wet and fallen apart. (hadn’t rained all week). Product itself is good but chewy needs to make some serious changes. I’ve ordered way sketchier and got much better results. Seriously chewys gotta make some serious changes. Would love to attach a picture but aparently it’s “too large”

Rated 5 out of 5 stars
By ckitty4499 on Aug 29, 2025

Pretty

This sand is so pretty with no problems just rinse about times

This sand is so pretty with no problems just rinse about times

Rated 5 out of 5 stars
By Gaby on Apr 5, 2025

Great product

It was a finer substance than what I anticipated but works great with my water plants.

It was a finer substance than what I anticipated but works great with my water plants.

Rated 5 out of 5 stars
By Ninja on May 28, 2025

The reviews and benefit

Sleek and makes the tank look nice and came in nice

Sleek and makes the tank look nice and came in nice

Rated 5 out of 5 stars
By Kristie on Mar 19, 2025

It was perfect for my needs

The color was great.

The color was great.

Rated 5 out of 5 stars
By Patty on Sep 22, 2024

Bio Substrate black diamond

Beautiful. Clean and perfect for my 5 gallon betta tank.

Beautiful. Clean and perfect for my 5 gallon betta tank.