Finding the best aquarium rocks for fish suitable for your needs isnt easy. With hundreds of choices can distract you. Knowing whats bad and whats good can be something of a minefield. In this article, weve done the hard work for you.

Best aquarium rocks for fish

Product Features Editor's score Go to site
Nature's Ocean 12-Inch Coral Base Rocks for Aquarium, 40-Pound Nature's Ocean 12-Inch Coral Base Rocks for Aquarium, 40-Pound
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Supply Guru SG2133 River Rocks, Pebbles, Outdoor Decorative Stones, Natural Gravel, For Aquariums, Landscaping, Vase Fillers, Succulent, Tillandsia, Cactus pot, Terrarium Plants, 2 LB. (32-Oz). Supply Guru SG2133 River Rocks, Pebbles, Outdoor Decorative Stones, Natural Gravel, For Aquariums, Landscaping, Vase Fillers, Succulent, Tillandsia, Cactus pot, Terrarium Plants, 2 LB. (32-Oz).
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GloFish Aquarium Gravel, Pink/Green/Blue Fluorescent, 5-Pound GloFish Aquarium Gravel, Pink/Green/Blue Fluorescent, 5-Pound
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Wayber Pink Pebble, 0.9 Lb/410g Stones Rock Crystal Sands for Aquarium Fish Turtle Tank Landscape/Bonsai Succulent Plants Ornament/Bottom Decoration, Rose Quarzt (Fills 1&1/8 Cups) Wayber Pink Pebble, 0.9 Lb/410g Stones Rock Crystal Sands for Aquarium Fish Turtle Tank Landscape/Bonsai Succulent Plants Ornament/Bottom Decoration, Rose Quarzt (Fills 1&1/8 Cups)
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LF inc. 1 LB Decorative River Rocks, Great for Aquariums, Landscaping, Vase Filers, Plant Decor, Natural Gravel, Fish Tank Decor LF inc. 1 LB Decorative River Rocks, Great for Aquariums, Landscaping, Vase Filers, Plant Decor, Natural Gravel, Fish Tank Decor
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ZUINIUBI 500g Transparent And Blue Color Pebble Turtle Fish Tank Sand Glass Beads Sand Rocks Aquarium Decoration Ornament Stone Landscape 1-3mm ZUINIUBI 500g Transparent And Blue Color Pebble Turtle Fish Tank Sand Glass Beads Sand Rocks Aquarium Decoration Ornament Stone Landscape 1-3mm
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VORCOOL Aquarium Sea Rock Cave Ornament for Fish Tank Decoration VORCOOL Aquarium Sea Rock Cave Ornament for Fish Tank Decoration
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Floating Moss Rocks Resin Stone Decorations Suspended Rock Fish Tank Decoration Rock Aquarium Rocks (One Rock S) Floating Moss Rocks Resin Stone Decorations Suspended Rock Fish Tank Decoration Rock Aquarium Rocks (One Rock S)
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Penn Plax Stone Replica Aquarium Decoration Realistic Granite Look with Fish Hideaway 8 Piece Set Penn Plax Stone Replica Aquarium Decoration Realistic Granite Look with Fish Hideaway 8 Piece Set
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Royal Imports 5LBS River Rocks Decorative Ornamental Pebbles, Garden Landscaping Stones, Gravel Filler for Plants, Vases, Succulents, Home Decor, Aquariums, Crafting, Animal Habitat - Large Natural Royal Imports 5LBS River Rocks Decorative Ornamental Pebbles, Garden Landscaping Stones, Gravel Filler for Plants, Vases, Succulents, Home Decor, Aquariums, Crafting, Animal Habitat - Large Natural
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1. Nature's Ocean 12-Inch Coral Base Rocks for Aquarium, 40-Pound

Feature

Aquarium Decorations used for Conserving Natural Reefs
Perfect for Coral Farming, Culturing Live Rocks & Growing Live Coral
Rapidly adapts to live environment & Will not affect the cycling of your tank
Naturally porous Biological Filter, Free of Biofilm & Perfect for aquascaping
Soaked in deep water well to prevent leeching

Description

Nature's Ocean Coral Base Rocks 40LBS (Packaged: 2 per case 12 Inch - 17 Inch)Nature's Ocean Base Rock is 100% premium all natural aragonite rock covered with naturally formed holes and crevices which makes for some very interesting and unique shapes and is easy to stack when creating a base for growing live coral or as an addition to existing coral-based ecosystems. This porous characteristic provides a natural biological filter as well as a perfect environment for denitrifying marine bacteria to grow and flourish, which effectively reduces nitrates in your tank.

2. Supply Guru SG2133 River Rocks, Pebbles, Outdoor Decorative Stones, Natural Gravel, For Aquariums, Landscaping, Vase Fillers, Succulent, Tillandsia, Cactus pot, Terrarium Plants, 2 LB. (32-Oz).

Feature

This river rocks are natural lightly polished for smooth effect, comes in a variety of natural colors and patterns combination of the popular natural color and shades such as brown, white, black, red, grey.
Includes, 2 pounds (32 oz), of gravel, medium size, Measures approximately 3/4-inch. safe for aquariums, helps soil retain moisture, provides good drainage, round and soft easy on the feet as there are no sharp edges.
Add an extra beauty in your outdoors: walkways, driveways, water features, ponds, water gardens, exposed aggregate flooring or walls and around swimming pools.
Great accent for crafts: aquariums, rock gardens, succulent tillandsia plants, cactus pot, terrarium, bamboo plants and bonsai trees.
Perfect for home decor projects: floral arrangements, centerpieces, vases, bowls, apothecary jars, wedding buffet, display canisters, pillar candle in hurricane glass.

Description

This river rocks comes in a variety of natural colors and patterns combination of the popular natural color and shades such as brown, white, black, red, grey, are natural lightly polished for smooth effect, and the earthy tones match most any decor.

2 pounds decorative Stones, small size, Measures approximately 3/4-inch.

LANDSCAPING
Add an extra beauty in your outdoors: walkways, driveways, water features, ponds, water gardens, exposed aggregate flooring or walls and around swimming pools, and many other areas, prevents erosion, helps soil retain moisture, and provides good drainage, round, easy on the feet as there are no sharp edges.

AQUARIUMS AND PLANTS
Great accent for crafts: aquariums, rock gardens, succulent tillandsia plants, cactus pot, terrarium, bamboo plants and bonsai trees.

Caution: before putting the rocks into the aquarium, please ensure that you wash them really well to get rid of any surface chemicals, bacteria that may be present. Soak them in boiled water (don't boil rocks), brush and rinse well, or soak in a bleach/water solution, let it dry before use.

ARRANGEMENT DECORATION
Perfect for home decor projects: floral arrangements, centerpieces, vases, bowls, apothecary jars, wedding buffet, display canisters, pillar candle in hurricane glass.

Warm-toned natural pebbles are the perfect accents for many uses; Nature provides a sturdy, beautiful base for craft projects in a multitude of ways providing opportunities for creativity and exploration in the form of rocks and pebbles. Add these rocks to the bottom of any floral arrangements, or fill an empty vase for a tabletop accent, Pair with candles for a natural accent to any room. River Rock can make a beautiful patio design.

WARNING: CHOKING HAZARD - Small parts. Not for children under 5 yrs.

3. GloFish Aquarium Gravel, Pink/Green/Blue Fluorescent, 5-Pound

Feature

Pink, Green, Blue Fluorescent gravel
Use as substrate or accent
5 pound bag

Description

GloFish aquarium kits, lighting and dcor create an underwater fluorescent wonderland that appeals to all ages and levels of expertise. With our full range of vibrant accessories uniquely designed to work with GloFish LED lighting, you can transform any aquarium into a GloFish environment at the click of a switch. GloFish Aquarium gravel completes your GloFish experience and complements your GloFish. This gravel is specially selected to stand out under the blue lighting in your GloFish aquarium. The green, pink and blue colors add a fun touch to your aquarium floor, reflecting your personality and style throughout. Simply add gravel to your aquarium, decorate with GloFish plants and add your GloFish. A combination of fish and accessories let you Experience the Glo today!

Rinse gravel before using. This bag contains 5 pounds of multi-colored gravel. Create depth by adding larger amounts in the front of back of your aquarium. Use exclusively or as an accent to other aquarium gravel.

4. Wayber Pink Pebble, 0.9 Lb/410g Stones Rock Crystal Sands for Aquarium Fish Turtle Tank Landscape/Bonsai Succulent Plants Ornament/Bottom Decoration, Rose Quarzt (Fills 1&1/8 Cups)

Feature

Net Weight: 0.9 pound (410 grams). Fills 1&1/8 Cups or 0.28 L volume. NB The stone is 0.9 pound heavy but SMALL BAG!!!
Polished Surface: Smooth and easy to clean. Make sure to rinse 3-4 times before use, but DO NOT rub violently!
Widely Usage: Excellent for aquariums, terrariums, flowerpot, glassware, vases, beach wedding, fountain decoration, also use for chakra cleansing, reiki healing and crystal grids.Keep it away from children under 3.
Safe & Long Lasting: Non-toxic just like river gravels. Natural color won't fade away through time. These pink crystal stones decorate the fish tank and also maintain the water clean.
100% Natural Pink Decorative Pebbles: Set up a natural and shining looking for home of you and your de-lovelys.

Description

0.9 Lb/410g Decorative Sand Rock Crystal Stones for Decoration/Jewelry

Multi-funtion

Can be placed within the potted plant,make plants grow lush healthy,exuberant.
Can be placed on an altar or poured into a small offering bowl.
Perfect for Jewelry Making,Artwork and Home Decoration.

Package

0.9 Pound/Pack(About 410 Grams).
Picture is only for your reference,the actual color of the item might be slightly different from the pictures.

5. LF inc. 1 LB Decorative River Rocks, Great for Aquariums, Landscaping, Vase Filers, Plant Decor, Natural Gravel, Fish Tank Decor

Feature

BRAND NEW - Our products go through an intensive quality control process before leaving the warehouse, ensuring our customers get exactly what they want
The LF Inc. PROMISE - We stand behind all our products and provide our customers with the highest quality products at a reasonable price.
Fade Resistant River Rocks | PLEASE WASH ROCKS BEFORE USING
Natural rocks are non-toxic and are safe for plants and aquariums
Great to be used as decor for aquariums, plants, and much more!

Description

Brand New

Features:

Each bag comes with 1 LB of river rocks

Fade Resistant Rocks

Natural Stones are non-toxic and are safe for aquariums and plants

Great as decor for plants, aquariums, and much more!

The LF Inc. Promise

We stand behind all our products and provide our customers with the highest quality products at a reasonable price.

6. ZUINIUBI 500g Transparent And Blue Color Pebble Turtle Fish Tank Sand Glass Beads Sand Rocks Aquarium Decoration Ornament Stone Landscape 1-3mm

Feature

100% Handmade Glass Pebbles: set up a natural and shining looking foreground in tank and aquarium for your fishes,turtles frogs etc,. Very pretty under water .
Non-Toxic & Safe: made of glass, will not alter the chemistry of your aquarium water. Good choice for your aquarium and succulent decoration.
Gorgeous Stones with Elegant Surface: smooth,polished and easy to clean. Make sure to rinse 3-4 times before your decoration projects,but DO NOT wash it violently!
Long Lasting & Colorfast Pebbles: made of glass won't fade away through time!
Net Weight & Attention: 1.10lb/500g, perfect for accenting your potted succulent creations and aquarium! Keep it away from children under 3 years in case chocking hazard! ZUINIUBI Guarantee: 100% HANDMADE glass!

Description

No ideas to highlight your aquarium? Try those beautiful pebbles glass pieces!
- ZUINIUBI amazing pebbles set our rocks apart from other rocks, not only give a stylish looking and brighten up to your tank but also can use over the top soil in your succulent/cacti garden and make them look amazing!
- Each of the little pebbles are polished like river rocks. They make a gorgeous accent to an aquascape.
Great Decoration Ideas
- Aquariums, tanks, Betta bowl.
- Landscaping decoration, coloured glass mulch in pot plants and terrariums succulent gardens
- DIY projects & craft embellishments.
Why need those colored tiny rocks?
- Prevent soil erosion and retain soil moisture.
- Those gravels add a natural look to any aquarium.
ZUINIUBI Decorative Pebbles' GUARANTEE:
- We guarantee if there is quality problem on our gravels, you can choose either REFUND or RE-SEND as a resolution. We cherish the relationship between each buyers and us!
Packaging:
1.10lb/500g transparent and blue colored pebbles.

7. VORCOOL Aquarium Sea Rock Cave Ornament for Fish Tank Decoration

Feature

Color: Iron grey. Material: Resin.
Size (W * H): Approx. 11 * 12cm 4.33 * 4.72 inch.
Fish or shrimp can free to through the cave.
Safe and non toxic for use in both freshwater and saltwater.
To create a nice underwater landscape to give depth and interest to your fish tank or aquarium.

Description

Description

This item is an aquarium ornament with cave design where fish or shrimp can free to through the cave. With safe and non toxic for use in both freshwater and saltwater. This would create a nice underwater landscape to give depth and interest to your fish tank or aquarium.

Features

- Color: Iron grey.
- Material: Resin.
- Size (W * H): Approx. 11 * 12cm / 4.33 * 4.72 inch.
- Fish or shrimp can free to through the cave.
- Safe and non toxic for use in both freshwater and saltwater.
- To create a nice underwater landscape to give depth and interest to your fish tank or aquarium.

Package Including
1 * Aquarium Fish Tank Ornament Landscape Cave

8. Floating Moss Rocks Resin Stone Decorations Suspended Rock Fish Tank Decoration Rock Aquarium Rocks (One Rock S)

Feature

You can tie sucker and pumice rope together, then drag it into the water, make the sucker clamp the bottom of the water tank, establish the substrates of suspended landscape and growing plants.
The stone will float easily at any level by adjusting the length of string.
Make your fish tank like a magic land in the movies.Perfect decorations for your aquarium.
Pumice surface has many holes, not only touch more area, but also absorb harmful bacteria and heavy metals in the water, is conducive to climbing and eradication of plants; plant can dissolve minerals, this not only leads to the growth of fish, but also provides fertilizer for plants.
Eco-friendly MaterialMade of advanced resin, this Aquarium Decoration Rock will do no harm to your fish pet. It's non-polluting and non-radioactive.

Description

The floating stone could be a nice decor in fish tank and aquarium. special and beautiful. The stones with green simulation moss are floating in the wateryour fish tank will make special and beautiful.

Floating Rocks made of advanced resin are high strength, acid, corrosion resistance and non-polluting, non-radioactive, etc. The suspended stones are eco-friendly products for fish.

  • Small:6 cm x 9.2 cm
  • Medium:14.2 cm x 9 cm
  • Large:18 cm x 15 cm

light weight, it will float on the water surface

You can tie the suction cup with the rope of pumice and drag it into the water, so that the suction cup clamps the bottom of the tank and creates a suspension landscape

Plant growth substrate, pumice surface has many holes, can contact a large area, can absorb the harmful bacteria in water and heavy metals, is conducive to plant climbing and eradication, the plant itself can be dissolved minerals not only lead to fish growth, can also provide fertilizer for plants.

9. Penn Plax Stone Replica Aquarium Decoration Realistic Granite Look with Fish Hideaway 8 Piece Set

Feature

This 8 piece set of granite stone replicas has a realistic shape in shades of grey and black. Set includes 3 small stones, 3 medium stones, and 2 large stones.
This aquarium decoration provides visual interest for you and your fish. Holes provide a hideaway for your fish to rest or hide reducing stress and aggression.
These granite stone replicas are perfect for cichlid tanks since this fish is territorial and must create their own space. These aquarium ornaments mimic what is found in an oceanic environment.
Since each rock is separate from the other, you can arrange the stones according to your fish tank size and needs. The larger stones have a flat top for stacking and stability.
Made of safe durable resin, this aquarium decoration is safe for use in both freshwater and saltwater aquariums. Additional stones can be purchased separately to create even larger displays.

Description

The Penn Plax Granite Stone Replica Aquarium Decorations offers visual interest to your tank while reducing fish stress. This 8 piece set has the realistic look of granite rocks with their rounded shape in shades of black and white. This aquarium ornament serves two purposes, to add visual interest for humans but also acts as a hideaway and pass through for your fish. This can help when more than one fish is present in the tank allowing them to play, rest, and hide inside while minimizing aggression. These granite stone replicas are perfect for cichlid tanks since this fish is territorial and must create their own space. These aquarium ornaments are made of quality resin and come with 3 large, 3 medium, and 2 small rocks in the set. This fish hideaway is freestanding and double sided so it can be placed anywhere in your fish tank. The larger rocks have a flat top for stacking and can be arranged according to your fish tank size and needs. Coordinate these rocks with other aquarium decorations and plants to create a complete environment for your fish tank. Fish not included.

Included in set:

2 small stones - 2 inches high
3 medium stones - 3 inches high
2 large stones - 4 inches high

10. Royal Imports 5LBS River Rocks Decorative Ornamental Pebbles, Garden Landscaping Stones, Gravel Filler for Plants, Vases, Succulents, Home Decor, Aquariums, Crafting, Animal Habitat - Large Natural

Feature

NATURAL STONES- These high quality natural stones by Royal imports are non-toxic and eco-friendly river rocks. Their natural attribute will make them last longer because they will not deteriorate like mulch does. Common applications include flowerbeds, groundcover, decorative concrete topping, or walkway paving. Decorative rocks are a permanent and cost-effective alternative to annual wood mulching.
MANY USES- If you want to add extra beauty in your garden, lawn and even to your potted plant or aquarium this pack of pebbles is ideal for you. It is perfect for home decor and a creative interior and exterior design. Use for flower arrangements, vase fillers, walkways, water features, exposed aggregate flooring or walls, swimming pool areas and many other areas. It could also be used as an accent to aquariums (see caution below), water gardens, ponds, and terrariums.
ROUND AND SMOOTH- These pebbles are easy on the feet as there are no sharp edges. Because of the shape, river rocks provide good drainage and is very attractive at the same time. River rocks are used in flower and garden beds and on walkways for erosion control.
BEST BUY- Bring an earthen beauty to your dcor with these smooth and vibrant river rocks. The natural, black and white finish pebbles can be utilized in many decorations, and will wonderfully embellish nature-themed surroundings. For an eye-catching homage to the Great Outdoors, scatter these stones around the base of a pillar candle in hurricane glass, and feature it on your coffee table or mantel
COLOR & DIMENSIONS - Rocks range in length approx from 2.00" to 0.75"(rocks are natural and as a result some may be broken or out of shape, oval or round, thick or thin). The color of this river rock is natural so it may include a variety of different shades of browns, whites and black rocks. These rocks are packaged in a 5 pound netted bag. Approximately 160 rocks per bag.

Description

Decorative landscape stone pebbles add beauty and protect your yard patio and lawn by keeping down weed growth and controlling erosion. The beauty of natural stone is great for enhancing your landscape around trees, shrubs, flowerbeds, ponds and foundations. Compliment your yard with Royal Imports decorative river rocks. Use these pebbles for landscaping around trees, potted plants decks driveways or yard.

Vase fillers
River rocks are the secret to great flower arranging. Add this reusable river rocks to your floral displays to hold stems in place.

Royal Imports decorative collection of rocks best in quality hand-picked stones from around the world. All stones are tumbled and polished to produce the smoothest stone without blemishes.

These little stones can also be used as a substitute to mulch along walkways and outdoor gardens, fountains, interior and exterior planters, creative interior and exterior design. These river pebbles are perfect accents for candles, vases, floral arrangements, fountains.
Also great for use in craft projects and home decor.

Features:
Each bag is 5lb, comes in a netted bag
Each rock is approx. 1"
Resists fading for long-lasting beauty
Natural Stones are non-toxic
Great for use as a filler for cylinders, trays, home dcor, aquariums (see warning guide below)

Caution: We do not offer guidance on the specific effect of this rock on your flora, fauna, fungi, etc. or how it will affect the water quality levels of pH, GH, alkalinity, ammonia etc. when in doubt discuss with a aquatic professional or a floral specialist before use.
Before you add the rock into the aquarium vase or planter, please ensure that you wash them well to get rid of any surface chemicals, bacteria, fungus, algae and parasites that may be present.
Soak them in boiled water (don't boil rocks), brush with soap and rinse well, or soak in a bleach/water solution, let it dry before use.

Conclusion

By our suggestions above, we hope that you can found the best aquarium rocks for fish for you. Please don't forget to share your experience by comment in this post. Thank you!
Jill Rose