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CaribSea Eco-Complete 20-Pound Planted Aquarium, Black

4.7 4.7 out of 5 stars 4,827 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Aquarium Gravel by Carib Sea

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20 POUNDS
Black

Purchase options and add-ons

Brand Carib Sea
Item Weight 20 Pounds
Item Form Granules
Target Species Fish
Allergen Information Buckwheat

About this item

  • Complete substrate for freshwater planted aquariums
  • Contains major and minor trace elements to nourish aquarium plants
  • Substrate encourages healthy plant root growth
See more product details

Customer ratings by feature

Style
4.6 4.6
Sheerness
4.5 4.5
Value for money
4.4 4.4
Easy to clean
4.4 4.4

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$29.99
Get it Apr 3 - 4
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Ships from and sold by Petco.
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$10.99 ($1.10/Count)
Get it as soon as Monday, Apr 1
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Ships from and sold by Amazon.com.
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$9.99
Get it as soon as Monday, Apr 1
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Sold by capetsma and ships from Amazon Fulfillment.
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CaribSea Eco-Complete 20-Pound Planted Aquarium, Black
CaribSea Eco-Complete 20-Pound Planted Aquarium, Black
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Price$29.99$19.99-19% $29.99
List:$36.97
$219.99$44.99$20.76
Delivery
Get it Apr 3 - 4
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it Apr 1 - 4
Get it Apr 8 - 11
Get it as soon as Monday, Apr 1
Customer Ratings
Style
4.6
4.1
4.6
4.8
4.3
Value for money
4.4
4.0
3.8
4.4
3.4
Sheerness
4.5
3.8
3.2
3.7
Easy to clean
4.4
2.9
4.4
3.1
Sold By
Petco
Amazon.com
Amazon.com
FREE 3 DAY ARRIVAL SHIPPING
SGHP
Amazon.com
target species
Fish
Fish, Shrimp, Plant
Fish
Fish
Fish
form
Granules
Granules
Flakes
weight
20 pounds
4.4 pounds
3.1 pounds
8 pounds
20 pounds
1 pounds

Product information

Technical Details

Additional Information

Warranty & Support

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Product Warranty: For warranty information about this product, please click here

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CaribSea

CaribSea Eco-Complete 20-Pound Planted Aquarium, Black


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From the manufacturer

About Us

CaribSea Inc. is in the hands of a second generation of aquarists, scientifically trained and with decades of experience. Since 1975 CaribSea has remained on the leading edge of closed system development by matching substrate mineralogy and hardscapes to the universe of microbiology. CaribSea is constantly changing and evolving but what remains the same is the commitment to producing one of the most advanced and very best quality products in our field.

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Product Description

New formula for enhanced root development. Why does Eco-Complete planted aquarium substrate outperform other products? For the same reason that Hawaii, Bali and Costa Rica are famous for lush, exuberant plant growth. The secret lies in rich basaltic volcanic soil which contains iron, calcium, magnesium, potassium, sulfur plus over 25 other elements to nourish your aquatic plants. Eco-Complete Planted Aquarium Substrate is mineralogically and biologically complete, giving you luxuriant aquatic plant growth without nuisance algae. Iron rich Eco-Complete eliminates the need for laterite. No artificial dyes, paints, or chemical coatings. Eco-Complete has highly porous spherical grains for optimum diffusion performance and contains live Heterotrophic bacteria to rapidly convert fish waste into natural food for your aquatic plants. It establishes a natural biological balance which makes cycling a new aquarium faster and safer. Directions: Add Eco-Complete to empty aquarium, then add water, plants, start all filters and pumps. If adding to an existing tank, mix in a few pounds a day over a period of a week or more.

Customer reviews

4.7 out of 5 stars
4.7 out of 5
4,827 global ratings

Customers say

Customers are happy with the quality, appearance and growth of the aquarium substrate. They mention that it looks amazing against the brighter fish, and that the plants are growing great and healthy. They also appreciate the ease of cleaning, saying that there is no rinse required and that it does not dirty the water. Customers also praise the substrate as great and top notch for aquariums.

AI-generated from the text of customer reviews

565 customers mention494 positive71 negative

Customers like the quality of the aquarium pond water treatment. They say it works well, is easy to use, and has beneficial properties. Customers also say the plants like it and the roots grip to it well.

"...Easy to clean and to plant in! So much cheaper than the alternatives!!" Read more

"...Looks really good, very happy after that work. No fish died." Read more

"Great company, great product for growing aquatic plants." Read more

"...Looks like it will provide a nice base for growing water plants and for the aquatic ecosystem." Read more

311 customers mention301 positive10 negative

Customers are satisfied with the appearance of the aquarium pond water treatment. They mention that it looks nice, amazing against brighter fish, and contrasts nicely with shrimp and fish. Some appreciate the red-brown color and texture of the substrate.

"...My plants grow beautifully and it stays a nice rich black. Easy to clean and to plant in! So much cheaper than the alternatives!!" Read more

"...Looks really good, very happy after that work. No fish died." Read more

"Looks great but did raise the ph to 8. I had to place a few plants in small peat moss disks to lower the ph back to 7" Read more

"...No rinse required and it looks great. You will need to change your filter but that’s it. Very pleased." Read more

293 customers mention262 positive31 negative

Customers like the growth of their plants in the aquarium pond water treatment. They say that the plants are taking root and growing in it. They also mention that the substrate holds plants in place nicely until roots are formed. Customers are also impresseded with the new growth of the plants.

"My favorite substrate for the $!! My plants grow beautifully and it stays a nice rich black. Easy to clean and to plant in!..." Read more

"...love how the black contrast with the green and does a great job at growing plants" Read more

"...recommend this substrate to anyone who wants no fuss, and plant friendly beautiful gravel in their aquariums you won’t be disappointed!..." Read more

"...ones and moving or removing the other decorations.. The plants grew so healthy and my Corydoras went crazy grazing along the bottom...." Read more

167 customers mention145 positive22 negative

Customers find the aquarium pond water treatment easy to clean. They mention it does fine, there's no rinse required, and it doesn't dirty the water. It clears up within a few hours and needs less vacuuming.

"...My plants grow beautifully and it stays a nice rich black. Easy to clean and to plant in! So much cheaper than the alternatives!!" Read more

"...No rinse required and it looks great. You will need to change your filter but that’s it. Very pleased." Read more

"Doesn't even need to be rinsed and clears up instantly. Only buy this never fluval" Read more

"Does not dirty the water" Read more

157 customers mention157 positive0 negative

Customers are satisfied with the substrate. They mention that it's a great substrate for planted tanks, and is highly regarded as one of the best substrate choices for planted aquariums. Customers also say that the substrate is good soil, and excellent for shrimp and plants.

"...But it does have some downsides.TL;DR: Good dirt, fish and plants love it. Expensive...." Read more

"...The rest of the tank has river rock. This substrate is really good." Read more

"...The fish seem fine with it. The snails took right to it no problem, and the shrimp love it for all the nooks and crannies to reach into...." Read more

"I bought 4 bags of this for my 55 gal aquarium. It made a nice thick layer on the bottom perfect for planting...." Read more

86 customers mention60 positive26 negative

Customers have mixed opinions about the ease of use of the aquarium pond water treatment. Some mention it's very easy to setup, add straight into the tank, and place the plants into it. However, others say that it'll be hard to plant anything in, tedious to plant plants that need to be buried in, and give plants some difficulty in rooting.

"...I recommend this substrate to anyone who wants no fuss, and plant friendly beautiful gravel in their aquariums you won’t be disappointed!..." Read more

"...in water/conditioner already so no need to wash which makes it very easy to use, just dump it in the tank as is..." Read more

"...Planting did kick up a bit, but not as much as I would have thought...." Read more

"...This needs nothing ready to use and my plants are growing great" Read more

151 customers mention74 positive77 negative

Customers are mixed about the water quality of the aquarium pond water treatment. Some mention that it didn't make their water cloudy on first adding water, while others say that it does cause cloudiness if added to an existing aquarium.

"...All done---no cloudiness, no smell, no unexpected worms. Really nice. I just have to wait to cycle the aquarium...." Read more

"Aquarium substrate said ready to use but clouds the water. After running the filter for a day, water cleared...." Read more

"...This substrate didn't cloud my water after placing for more that two hours...." Read more

"...which isn't a "con" but it is something I had to mention - it clouds the tank at first. You are adding dirt to a tank.. it is going to happen...." Read more

83 customers mention55 positive28 negative

Customers have mixed opinions about the color of the aquarium pond water treatment. Some mention that it's very dark, while others say that it is more of a dark brown color.

"...continue to be amazed with the new growth of my plants and bright coloring of my shrimp! By far the easiest substrate I’ve worked with. NO rinsing!..." Read more

"...It truly is black but there are some darker shades of brown which I think adds a little extra color to the tank...." Read more

"...About eight weeks have gone by now and my bottom is now about half white, half black. In short I vacuum up a lot of Eco...." Read more

"...This substrate, black in color and most attractive, isn't so light that plants won't set in the soil without some type of weight...." Read more

Really works
5 Stars
Really works
This photo is just 30 minutes after I completed changing the tank out. I replaced the old decor and gravel and just poured the new substrate in. No rinse required and it looks great. You will need to change your filter but that’s it. Very pleased.
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Top reviews from the United States

Reviewed in the United States on March 18, 2024
Size: 20 POUNDSColor: BlackVerified Purchase
Reviewed in the United States on February 3, 2024
Size: 20 POUNDSColor: BlackVerified Purchase
Customer image
5.0 out of 5 stars Dirty
Reviewed in the United States on February 3, 2024
Wow I did a lot of rinsing, little by little and the sand turned my tank cloudy but filter changing, water change and time it came clear and I love it. Looks really good, very happy after that work. No fish died.
Images in this review
Customer image
Customer image
One person found this helpful
Report
Reviewed in the United States on February 28, 2024
Size: 20 POUNDSColor: BlackVerified Purchase
Customer image
5.0 out of 5 stars Great for growing plants
Reviewed in the United States on February 28, 2024
I absolutely love how the black contrast with the green and does a great job at growing plants
Images in this review
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Customer image
One person found this helpful
Report
Reviewed in the United States on February 15, 2024
Size: 20 POUNDSColor: BlackVerified Purchase
Reviewed in the United States on March 12, 2024
Size: 20 POUNDSColor: BlackVerified Purchase
Reviewed in the United States on February 15, 2024
Size: 20 POUNDSColor: BlackVerified Purchase
One person found this helpful
Report
Reviewed in the United States on February 25, 2024
Size: 20 POUNDSColor: BlackVerified Purchase
Customer image
5.0 out of 5 stars Really works
Reviewed in the United States on February 25, 2024
This photo is just 30 minutes after I completed changing the tank out. I replaced the old decor and gravel and just poured the new substrate in. No rinse required and it looks great. You will need to change your filter but that’s it. Very pleased.
Images in this review
Customer image
Customer image
3 people found this helpful
Report
Reviewed in the United States on September 4, 2023
Size: 20 POUNDSColor: BlackVerified Purchase
Customer image
5.0 out of 5 stars You can’t go wrong with this substrate
Reviewed in the United States on September 4, 2023
I was deciding to do a complete makeover for my tanks, I needed a substrate that would support live plants 🌱 I was done with plastic plants and ready to take on the change, I love this substrate! Bags are surprisingly light considering they are 20 lbs a piece, easy to spread, plants stay put and flourish! Only problem I see is my snails keep getting the gravel stuck inside them (but they have figured out how to fix that!) I recommend this substrate to anyone who wants no fuss, and plant friendly beautiful gravel in their aquariums you won’t be disappointed!
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13 people found this helpful
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Top reviews from other countries

FRANK G.
5.0 out of 5 stars High quality for plants
Reviewed in Canada on March 28, 2023
Size: 20 POUNDSColor: BlackVerified Purchase
Ol
5.0 out of 5 stars Got product
Reviewed in the United Kingdom on June 16, 2019
Size: 20 POUNDSColor: BlackVerified Purchase
Larry G
5.0 out of 5 stars Good price
Reviewed in Canada on March 29, 2023
Size: 20 POUNDSColor: BlackVerified Purchase
david davies
5.0 out of 5 stars Very good
Reviewed in the United Kingdom on December 2, 2018
Size: 20 POUNDSColor: BlackVerified Purchase
One person found this helpful
Report
oniel Brown
4.0 out of 5 stars package was delivered no games
Reviewed in Canada on November 24, 2023
Size: 20 POUNDSColor: BlackVerified Purchase