Editor's Choice - Our Favorite Lava Aquarium Décor Rocks

1. Sera 32356 Rock Red Lava S/M (Piece from 8 to 15 cm) Lava Stone/Volcanic Rock - Natural Stone Decora...

User Ratings: 56 6

Sera 32356 First Impressions

"It's beautiful."

We are working on the hardscape for our new 36G bow front. He hides in it all the time and so far he hadn't torn any fins. I purchased these for decor for my aquarium and I adore how they turned out. I got 9 rocks in several sizes as noted in the pictures and several tiny chips. Great stones, came with 3 various sizes for the 5 lbs option. Photo 5 is a sample layout for my 45cm tank. Honestly it's a good idea to have some glue on hand anyways.

  • Sera 32356 Rock Red Lava S/M (Piece from 8 to 15 cm) Lava Stone/Volcanic Rock - Natural Stone Decoration for Aquarium
  • Dark red lava stone with porous surface
  • Sera Rock Red Lava Size S/M: 8 - 15 cm
  • As this is a natural product, the product may differ from the picture.
  • Manufacture: sera
  • Product Dimensions: 4.72 x 3.94 x 3.15 inches; 7.05 Ounces
  • Editor's Impressions Of The Sera 32356
  • Quality [star rating='4.1']
  • Value For Money [star rating='5']
  • Affordability [star rating='3.2']

Sera 32356 Final Thoughts

"I got around 11 rocks."

And will change the hardness and ph of your water as it leeches. My order came with large and small pieces allowing for some good combinations. Love these rocks and you usually get 1 big, 3 Med and the rest small. Hope this helps anyone that was wondering how we got our rocks so dark. Also, if you need any manzanita or any other driftwood. You should never buy rocks but there's no Dragon stone down by the river. But it was definitely not what I expected.

Overall Score
4.2

[star rating="4.2"]
(51 Points)

Peoples Choice - Other Highly Rated Lava Aquarium Décor Rocks

2. Aqua Della Combo-Lava Decoration Rock, 22.5 x 18.5 x 15.5cm

User Ratings: 55 6

Aqua Della 234-104873 First Impressions

"Looks so good."

I'll order this again, but for now I have more than I need! And placed in a 36 gallon bowfront. Love this product did not change colors when water ran over it. Just trying to help you find good products for a good price. The water deactivates it and makes it safe. I used these for Aquarium decor and they look lovely in a planted tank. They arrived in tact and were all the size described.

  • Aqua Della Combo-Lava Decoration Rock, 22.5 x 18.5 x 15.5cm
  • Faithful reproduction as a decoration for your aquarium
  • Material and colors completely non-toxic
  • Suitable for fresh and salt water
  • No influence on the biological balance
  • Colorfast albeit slight changes over time possible
  • Manufacture: Aqua Della
  • Product Dimensions: 8.86 x 7.28 x 6.1 inches; 1.31 Pounds
  • Editor's Impressions Of The Aqua Della 234-104873
  • Quality [star rating='3.4']
  • Value For Money [star rating='3.2']
  • Affordability [star rating='4.4']

Aqua Della 234-104873 Final Thoughts

"I bought 2 for a 2."

The result is a beautiful black rock with white lines. And placed in a 36 gallon bowfront. Photo 3 is during a diluted muriatic acid bath. Worth every penny, my nano looks great. We ended up with two custom plants in the end, and a nicer custom rock. Super happy with what, only downside is I should've bought 2. Just hit the add to cart and wait until you get the dust off and see them wet.

Overall Score
4.0

[star rating="4"]
(43 Points)

3. Sera Rock Red Lava (Price Per Stone) Various Sizes – Lava Rock or Volcanic Rock – Natural Stone ...

User Ratings: 55 5

Sera 32357 First Impressions

"Exactly as pictured."

Overall, a great natural-looking stone in an aquarium. The structure is roughly 14l x 6h x 4d. Just be prepared to buy several bags if you have a 20+ gallon. The best part about this product was that it came with additional plants. But it was definitely not what I expected. Super happy with what, only downside is I should've bought 2. I soaked the rocks for about 20-25 min, took them out and hosed them off really well.

  • Sera Rock Red Lava (Price Per Stone) Various Sizes – Lava Rock or Volcanic Rock – Natural Stone Decoration for Aquarium – Decoration or Rock
  • Dark red lava stone with porous surface
  • Sera Rock Red Lava Size L: 16 - 23 cm
  • As this is a natural product, the product may differ from the picture.
  • Manufacture: sera
  • Product Dimensions: 5.12 x 5.91 x 5.51 inches; 1.1 Pounds
  • Editor's Impressions Of The Sera 32357
  • Quality [star rating='5']
  • Value For Money [star rating='3.9']
  • Affordability [star rating='4.5']

Sera 32357 Final Thoughts

"So far so good."

I was very pleasantly surprised with these dragon stones. My buddy said he found a better deal on etsy. I got 9 rocks in several sizes as noted in the pictures and several tiny chips. Worth every penny, my nano looks great. Perfect size just what I needed not as many as I expected. But it was definitely not what I expected. Perfect size just what I needed not as many as I expected.

Overall Score
4.2

[star rating="4.2"]
(27 Points)

4. Aqua Della Combo-Lava Decoration Rock, 29.5 x 26 x 9cm

User Ratings: 54 7

Aqua Della 234-104880 First Impressions

"The grey or black."

I got several smaller pieces that were about four to five inches wide. I'm always hesitant to buy it online, but this was a good transaction. Perfect size just what I needed not as many as I expected. I love the stones, but yes, barely enough to cover a corner of my aquarium. The edges of holes are also sharp, but easy enough to smooth with a razor knife. My cichlid love hiding under the caves. They are making these by sloshing resin around in a mold, so it's really thin.

  • Aqua Della Combo-Lava Decoration Rock, 29.5 x 26 x 9cm
  • faithful reproduction as a decoration for your aquarium
  • material and colours completely non-toxic
  • suitable for fresh and salt water
  • no influence on the biological balance
  • colourfast albeit slight changes over time possible
  • Manufacture: Aqua Della
  • Product Dimensions: 11.02 x 3.54 x 10.24 inches; 1.67 Pounds
  • Editor's Impressions Of The Aqua Della 234-104880
  • Quality [star rating='4.9']
  • Value For Money [star rating='4']
  • Affordability [star rating='3.3']

Aqua Della 234-104880 Final Thoughts

"I ordered 2 sets."

Also, if you need any manzanita or any other driftwood. Got this for my betta fish, he LOVES it. I hate negative reviews for awesome items just because the buyer didn't read! They are making these by sloshing resin around in a mold, so it's really thin. Perfect size just what I needed not as many as I expected. 2 small rocks and 4 medium ones and one large stone. I will not be able to get all 7 rocks in my Bio Orb 8 gallon tank.

Overall Score
4.0

[star rating="4"]
(24 Points)

Honorable Mentions - More Top Selling Lava Aquarium Décor Rocks

5. Lava Rock Formation for Aquariums Or Vivarium's, Artificial Extra Large Ornament, Fish & Aquatic Hab...

User Ratings: 61 20

AquariumH2o First Impressions

"So pretty."

I used these for Aquarium decor and they look lovely in a planted tank. Honestly it's a good idea to have some glue on hand anyways. I may have even used too much rock but I love how the scape came out with this rock. I got this for my 10 gal and it fits beautifully! I was expecting this to be a thicker resin piece. It was plenty for the tank I wanted to scape. I switched up my plans a bit and everything was lovely.

  • Lava Rock Formation for Aquariums Or Vivarium's, Artificial Extra Large Ornament, Fish & Aquatic Habitat Safe
  • Size is 11 Inch Long x 4 Inch Wide x 10 Inch High, Artificial Lava looking Rock Formation Aquarium Decor,
  • Full of Holes And Detail. Artificial Lava looking rock formation Aquarium Decor, will look great in any Fish tank & Aquarium ornament. This artificial rock formation has small holes allowing for shy fish to swim and hide.
  • Unusual Shape, extra large Fish Tank Decoration
  • Fish Safe Polyresin Will Not Effect water Chemistry. They are 100% safe for fish made from special resin that is non toxic and designed specifically for use in aquariums and fish tanks. Wash all items in water prior to placement in tank.
  • Manufacture: United Aquatics, LLC.
  • Editor's Impressions Of The AquariumH2o
  • Quality [star rating='4']
  • Value For Money [star rating='4.2']
  • Affordability [star rating='3.3']

AquariumH2o Final Thoughts

"The colors are great too."

I was expecting this to be a thicker resin piece. I love the look and color of this stone. Recieved 8 pieces of stone in my order with minimal chipping. Loved what I got, highly reccomend these. Not sure why but I just expected more. The water deactivates it and makes it safe. I got six, nice sized chunks of slate.

Overall Score
3.6

[star rating="3.6"]
(8 Points)

6. Saim Aquarium Mountain View Stone Ornament Tree Rock Cave Fish Tank Decoration

User Ratings: 64 6

Saim B0000030650 First Impressions

"I love theses."

He hides in it all the time and so far he hadn't torn any fins. When I opened the box I was so surprised and shocked. My cichlid love hiding under the caves. The price for the quantity of rock kind of drives me nuts. They are heavy and will slowly move if on a slope. The best part about this product was that it came with additional plants. The holed rock formation is a nice design, but the material being is way too thin.

  • Saim Aquarium Mountain View Stone Ornament Tree Rock Cave Fish Tank Decoration
  • Made from non-toxic resin plastic material.
  • Offers the natural environment feeling,change your aquarium into a beautiful scenery.
  • Detailed mountain includes several trees.
  • Size measures about: 10"/26cm x 4.2"/12cm x 10.2"/26cm(L*W*H)
  • Manufacture: Saim
  • Editor's Impressions Of The Saim B0000030650
  • Quality [star rating='3.8']
  • Value For Money [star rating='4.8']
  • Affordability [star rating='5']

Saim B0000030650 Final Thoughts

"I got around 11 rocks."

I thought the price was great for the quantity and quality as well. The result is a beautiful black rock with white lines. Trying shipping this much heavy stone. You should never buy rocks but there's no Dragon stone down by the river. I used these for Aquarium decor and they look lovely in a planted tank. I was very pleasantly surprised with these dragon stones. Worth every penny, my nano looks great.

Overall Score
4.3

[star rating="4.3"]
(222 Points)

7. Hewnda Gorgeous Aquarium Decorated with Aquarium Decorations Glass Beads Aquarium, 1 Pound of Enough...

User Ratings: 65 8

Hewnda First Impressions

"Can even stand alone."

Also, if you need any manzanita or any other driftwood. They are making these by sloshing resin around in a mold, so it's really thin. I really hope they upload the other 3 pictures. Cleaned the dust and clay residue off under running water and some brushing. Stones were perfect for my 5 gallon planted tank. The big rocks and theses small ones go perfect together. The water deactivates it and makes it safe.

  • Hewnda Gorgeous Aquarium Decorated with Aquarium Decorations Glass Beads Aquarium, 1 Pound of Enough Decorative Gravel Rock Gravel Pebbles gem
  • 【Material】 glass material, high temperature firing, never fade.
  • 【Specifications】 each about 1.5 * 2.5 cm, enough heavy can sink to the bottom.
  • 【Note】 Please use the water before washing with three or four times, rub back and forth, wash away the dust can be used. Keep the beads away from your child to avoid swallowing.
  • 【Application】 fish tank bottom, flower pots paved, home decoration, dried flowers cuttings
  • A range of can be tiled: (6.7 '× wide 6.7 "or so), so the larger aquarium needs more than 2 packs to make your fish tank become charming.
  • Manufacture: Hewnda
  • Editor's Impressions Of The Hewnda
  • Quality [star rating='5']
  • Value For Money [star rating='3.9']
  • Affordability [star rating='3.4']

Hewnda Final Thoughts

"I will be buying more."

These are just what I needed to creat stone walks in my model railroad park. For an Iwagumi layout, this would be the Oyaishi. They arrived in tact and were all the size described. I placed an order of 10ilbs for my 20g high. Photo 5 is a sample layout for my 45cm tank. I'm always hesitant to buy it online, but this was a good transaction. Just be prepared to buy several bags if you have a 20+ gallon.

Overall Score
4.2

[star rating="4.2"]
(325 Points)

8. Colorado Gray Rock Artificial Aquarium Landscape Rock

User Ratings: 47 35

AquariumH2o First Impressions

"Looks so good."

Also, if you need any manzanita or any other driftwood. Since it's 17lbs obviously you're going to get mostly small rocks. Absolutely perfect for use in my 20 gallon aquarium. Originally I set up a waterfall with them, but decided to fill the tank all the way. Love these rocks and you usually get 1 big, 3 Med and the rest small. Trying shipping this much heavy stone. Since it's 17lbs obviously you're going to get mostly small rocks.

  • Colorado Gray Rock Artificial Aquarium Landscape Rock
  • Size is 8 Inch x 5 Inch Wide x 6 Inch High
  • Full Of Holes And Detail
  • Unusual Shape
  • Fish Safe Polyresin Will Not Effect water Chemistry
  • Manufacture: United Aquatics LLC
  • Editor's Impressions Of The AquariumH2o
  • Quality [star rating='2.6']
  • Value For Money [star rating='3.7']
  • Affordability [star rating='3.6']

AquariumH2o Final Thoughts

"I love this slate!"

Trying shipping this much heavy stone. But then again, it's 17lbs of rock so I struggled rating this one. The bag I received was 17lbs and the rocks were in good condition. Recieved 8 pieces of stone in my order with minimal chipping. Com tell them I sent you for an extra not a damn thing at check out. I am only giving 4 star because I had no way to request a larger stone after order. No I dont work for them and no I dont get anything for saying that.

Overall Score
3.4

[star rating="3.4"]
(8 Points)

9. Penn-Plax Floating 2 Pc A Rock

User Ratings: 65

Penn-Plax FORB3 First Impressions

"I bought 2 for a 2."

The water deactivates it and makes it safe. And I just realized they are using them to hide their babies. Com tell them I sent you for an extra not a damn thing at check out. The shapes very interesting and pleasant to look at. And placed in a 36 gallon bowfront. 2 small rocks and 4 medium ones and one large stone. They match perfectly to my center piece and the cichlids love hiding in them.

  • Penn-Plax Floating 2 Pc A Rock
  • These Gravity Defying Natural Rocks Float Beneath The Water Line In Your Aquarium! In Addition To Looking Cool And Being A Great Conversation Piece
  • Runs On 2 D Batteries
  • This Product Is Made In China
  • Package Dimensions: 4.5" L X 6.0" W X 7.8" H
  • Manufacture: Penn Plax, INC.
  • Product Dimensions: 4.5 x 6 x 7.8 inches; 11.2 Ounces
  • Editor's Impressions Of The Penn-Plax FORB3
  • Quality [star rating='4.3']
  • Value For Money [star rating='5']
  • Affordability [star rating='3.4']

Penn-Plax FORB3 Final Thoughts

"Its a fortune."

It was plenty for the tank I wanted to scape. Perfect size just what I needed not as many as I expected. When I opened the box I was so surprised and shocked. For the price, this should be solid resin. I had to break up some of the larger ones to fit what I was looking for. The best part about this product was that it came with additional plants. Trying shipping this much heavy stone.

Overall Score
4.3

[star rating="4.3"]
(2 Points)

10. Oubest Fish Tank Rocks Glow in The Dark Pebbles for Garden/Fish Tank/Aquarium/Plant Pots/Bonsai Walk...

User Ratings: 46 11

Oubest OUCHGS001 First Impressions

"Thank you to the seller."

They are heavy and will slowly move if on a slope. And will change the hardness and ph of your water as it leeches. The result is a beautiful black rock with white lines. The bag I received was 17lbs and the rocks were in good condition. Also, if you need any manzanita or any other driftwood. Also, if you need any manzanita or any other driftwood. My order came with large and small pieces allowing for some good combinations.

  • Oubest Fish Tank Rocks Glow in The Dark Pebbles for Garden/Fish Tank/Aquarium/Plant Pots/Bonsai Walkway/Driveway 500pcs
  • NON-RADIOACTIVE & NON-TOXIC: Made of long-afterglow luminous powder, polystyrene resin, which are non-toxic and do not contain any radioactive elements.
  • HOW IT WORKS: Glow stones absorb and store light and then when in darkness they give off light, with 2-3 hours of bright glow and then gradually dim away. They can repeat this process for 15 years.
  • VERSATILE DECOR: In darkness, they glow and help to show walkway, path, driveway, floor, or decorate garden, aquarium, fish tank, plant pots, bonsai.
  • PRODUCING SPECIAL EFFECTS: With the dreamlike glow in darkness, they could produce special effects.
  • WARM TIPS: The darker the surrounding and the more exposure to visible light, the more bright glow can be seen. When applying, do not stack stones on top of each other.
  • Manufacture: Oubest
  • Editor's Impressions Of The Oubest OUCHGS001
  • Quality [star rating='2.9']
  • Value For Money [star rating='4.5']
  • Affordability [star rating='3.1']

Oubest OUCHGS001 Final Thoughts

"Real look."

It's a good price for what you get. I got several smaller pieces that were about four to five inches wide. These broken bits are perfect for little details and filling gaps. Recieved 8 pieces of stone in my order with minimal chipping. They get tossed around in shipping and chunks break off. Different shapes and sizes to work with. I had to break up some of the larger ones to fit what I was looking for.

Overall Score
3.7

[star rating="3.7"]
(20 Points)

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