EXOTIC PEBBLES Natural Washed Black Gravel, Black, 20-lb - Chewy.com

Exotic Pebbles Natural Washed Black Gravel, Black, 20-lb

By Exotic Pebbles
Rated 3.8125 out of 5 stars

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$22.99Chewy Price

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About This Item


  • Natural stones to give your landscape, flower arrangements or potted plants an authentic look.
  • Features natural earth color tones with no colorings or coatings.
  • Sourced from quarries worldwide to provide a 100% natural addition to your home, garden or backyard.
  • Safe for use in aquariums to give your tank a unique look.
  • Pebbles may vary in size and shape due to the natural composition of the pebbles and direct sourcing.

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Questions & Answers

6 Customer Questions

Approx how many pounds of these to fit in a 10 gallon fish tank?
Answer by ChewyDec 12, 2019
The amount of rock depends on how deep you would like the the rock in your tank. Multiply the length by the width of the tank and divide by 19. This will give you the amount of gravel needed for a depth of 1 inch.

What is the approximate size of the pebbles?
Answer by ChewySep 29, 2019
Exotic Pebbles Natural Washed Black Gravel may vary in size and shape due to the natural composition of the pebbles and direct sourcing. They will measure approximately ⅜ inch - 1 ½ inches.

Is it pebbles black like the picture or gray?
Answer by ChewyOct 17, 2021
These pebbles are categorized as highly polished black pebbles. Please click the attached photo for another photo.

Will these stones work great in a 40 gallon Turtle aquarium?
Answer by ChewySep 16, 2022
These pebbles are safe to use in an aquarium.

ReviewsWrite a Review

Rated 3.8125 out of 5 stars
16 Ratings
Would recommend to a friend

16 Customer Reviews

Rated 5 out of 5 stars
By Ka on May 21, 2023

nice stones

I really like these, look good in my fish tank and I like them better than small gravel

Rated 3 out of 5 stars
By Chloe2 on May 24, 2022

almost perfect

Let me start off by saying these pebbles are exactly what I've been looking for as a beautiful natural alternative to the typical aquarium gravel. The 20lb bag perfectly covered my 20 gallon long tank. The pebbles are smooth, the perfect (not too big or small) size, and look amazing in my tank! Now the down side. After reading some reviews of the gravel needing to be prewashed (which I would have done regardless), I took extra care in not only soaking them over night but thoroughly washing them by hand in a strainer for several minutes in small batches. After setting up my tank, I added the water and let it settle for 2 days because the water was very cloudy. Despite the time, new filter, and water treatment the water never cleared up. leaving my tank with a dreary foggy look to it. So after several days of work, I'm now going to have to drain the tank and refill it. Hopefully after all this it won't be cloudy, because I really like this gravel and don't want to waste anymore time or money on getting new gravel. I'll update after the water change.

Rated 4 out of 5 stars
By krystal6 on Apr 11, 2022

Not black but still nice

I really like these rocks. They are not that shiny black but they look beautiful in a fish tank. They look natural. I am happy with the purchase.

Rated 5 out of 5 stars
By GloBe on Dec 15, 2021

They look good to me!

I really like these stones in my fish tank. They aren’t black but more of a deep gray and yes a couple of the stones are brown. I rinsed these when I got them and it still fogged up my tank but that went away after a night. The stones are bigger than traditional tank gravel that I see in most tanks but I think that’s neat. The bag was smaller than a 20lb bag at the pet store because these stones are larger and therefore heavier. One bag took care of one ten gallon and a half of another but I had a small bag from a pet store of those neon glow rocks to make my little girl happy- I don’t think it would completely do two ten gallons unless you prefer less gravel at the bottom of your tanks.

Rated 5 out of 5 stars
By kenna on Dec 30, 2021

love love love these pebbles!

these look soooo good. i put these in my aquarium because im not too fond of how gravel or sand substrate looks and i am very impressed. it looks so clean. there were two white pebbles in my bag but i actually like it and think its cool. these are also great for anchoring tubing and plants! i highly recommend this.

Rated 1 out of 5 stars
By Didi on Dec 4, 2021

Not happy at all

Not happy at all. I ordered the bigger stones and recived the small pebbles. 1 bag was busted open. Not a happy camper at all.

Rated 5 out of 5 stars
By Fred on Sep 30, 2021

These are more like small rocks instead of gravel.

If you get these for your 55 gal. tank, you need at least 3 bags, more if your tank is larger. I use an under gravel filter and 2 HOB powered filters. They look good in the tank...

Rated 4 out of 5 stars
By MrsMo on Aug 29, 2021

Not Black, but pretty

They aren’t black, but rather a darker grey. Not issues with broken ones. We did wash before adding to the tank. We like the look!

Rated 3 out of 5 stars
By Lopez on Jan 28, 2021

Nice Rocks, Bad Packaging

I really like these rocks they were exactly what I was looking for. However, while washing off the excess dust I got a few cuts. There was a rather large piece of glass I hadn't seen in the hiding in between the rocks. I was surprised. I wished they took more care in assuring such harmful substances don't make it to their final product. The rocks themselves are very nice.

Rated 4 out of 5 stars
By sevie on Dec 20, 2020

Nice, but they’re not black

These rocks are nice and smooth, what I was looking for to be kinder to my cory cats’ barbels, but the rocks are definitely not even close to black, so I just can’t give them five stars. The stones are larger than your average aquarium gravel, which is kind of a neat aesthetic, so that’s cool. I just really really wish they were darker. The photo was taken under my LED tank light on its lowest setting.