Qty:1
CaribSea Eco-Complete 20-... has been added to your Cart

Other Sellers on Amazon
Add to Cart
$26.24
+ Free Shipping
Sold by: Salty Supply INC
Add to Cart
$24.99
+ $6.99 shipping
Sold by: PetSolutions com
Add to Cart
$36.99
+ Free Shipping
Sold by: Billys Reef Connection

CaribSea Eco-Complete 20-Pound Planted Aquarium, Black

4.4 out of 5 stars 553 customer reviews
| 179 answered questions

Was: $23.99
Price: $22.06 & FREE Shipping on orders over $49. Details
You Save: $1.93 (8%)
In Stock.
Ships from and sold by Amazon.com in easy-to-open packaging. Gift-wrap available.
  • Complete substrate for freshwater planted aquariums
  • Contains major and minor trace elements to nourish aquarium plants
  • Substrate encourages healthy plant root growth
12 new from $19.99 1 used from $29.55
This item's packaging will indicate what is inside. To cover it, select Ship in Amazon box on the checkout page.

Marineland Starter Kit
$22.06 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com in easy-to-open packaging. Gift-wrap available.

Frequently Bought Together

  • CaribSea Eco-Complete 20-Pound Planted Aquarium, Black
  • +
  • Seachem Flourish Excel 500ml
  • +
  • Seachem Prime 500ml
Total price: $46.67
Buy the selected items together


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.

Product Details

  • Product Dimensions: 18 x 12 x 2 inches ; 20 pounds
  • Shipping Weight: 21.2 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B0002DH0QM
  • Item model number: 770
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (553 customer reviews)
  • Amazon Best Sellers Rank: #1,486 in Pet Supplies (See Top 100 in Pet Supplies)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
I like Eco complete for various reasons.

1) Dark almost black appearance. If you want that look this is the substrate for you. It wont fade like the painted gravel.

2) CEC- basically it absorbs nutrients and your plants take the nutrients from the rocks (in a nutshell)

3) no cleaning of the rocks- open the bag, pour it in your tank, no rinsing, no mess....plug and play

4) fish safe- I am a cory cat fish nut, and I hear people say it will cut their barbels... that is an urban legend. this is my 3rd tank I am using this on, all of my cories have long nice healthy barbels.

5) Easy to plant, grab my tongs/tweezers and push plant into place.

6) Cheap- cheaper than Aqua soil or fluval or whatever. 20 pounds of clown puke (colored gravel) is the same price.

7) I can push my plant tabs in the substrate with ease. I do the home made osmocote plus (which I bought from amazon)

8)Stable- it won't break down like aquasoil will, wont raise ph, ammonia etc....

With the money I save I can buy some plants or some fish.
11 Comments 210 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Verified Purchase
I purchased this substrate from Amazon because I had heard good reviews about it from the YouTube fish tank community. I set it up in my 55 gallon aquarium with a DIY black background, and boy do the plants look stunning! The black really brings out the color in my fish and the green/red in my plants. It has a large amount of nutrients in it, and I suppose you could use the substrate alone without fertilizers or CO2. I just use a $9.00 250m bottle of Flourish, an aquatic plant fertilizer that I bought at Petsmart. It lasts for 2 years for the size of my aquarium, so it's a worthy investment.

My only complaint about this product is that it is kind of misleading when it says that it has beneficial bacteria in it to cycle your tank. Please don't take it like it will instantly cycle your tank. It comes packed in water which is cycled, and smells very foul when you cut open the bag. ALSO, make sure that when you open the bag that you open it up over your aquarium or over a tub/outside, as it is almost like vacuumed sealed and it will splash. I made that mistake and it spilled all over my floor. No big deal, though. Anyway, you need to let your aquarium cycle completely just like you would with any other aquarium.

The substrate itself consists of very small sand particles and small sized granules. The package says that the small particles sift down to the bottom of the tank naturally to allow for optimum root growth and CO2/Nutrient supply, which is mostly true. Some of the particles still are on the top layer of the substrate, but overall the statement is true.

The bag also says that you do not need to wash this substrate before filling your aquarium up. I have found this to be completely true.
Read more ›
5 Comments 120 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Verified Purchase
I bought 2 bags for my 25 gallon tank which was a good amount. This was an established fish tank before I put this new gravel in. I changed the gravel completely to this new stuff in one day. My water was cloudy for a few hours and non of my fish died. I did keep as much of my original water as I could. I heard that this gravel was "stinky" but I didn't smell anything at all and the way these were packaged was amazing.
1 Comment 84 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
I bought 6 bags of this for my 100 gallon aquarium. I followed all instructions, first pouring in the substrate into tank, then slowly filling it with de-chlorinated water per instructions (I dechlorinated water inside a brute 40-gallon tank and used a submersible pump to move this dechlorinated water into my aquarium). The first thing you will notice is that the package is vaccum sealed and contains about 2 cups of water (in addition to the substrate) which holds beneficial bacteria, which is why it is necessary to use dechlorinated water.

I took off 1/2 star because the contents of the package was extremely foul smelling. Since I bought 6 packages, my living room became extremely smelly, it smells like a sewer. This is the most foul smelling substrate I have ever bought, but if it's good for my plants, then I'm willing to deal with that. After 4 days, the foul smell is finally gone. I do not know if fish can be added to the tank while the water is still foul smelling but it takes a few weeks to properly nitrogen cycle the tank anyway. I would not add this substrate to an established tank that already contains fish, given that the substrate smell can penetrate water and evaporate into air in order to be smelled. Other reviewers did not comment in this 4 day duration of foul odor, but my case may be severe because I used 6 bags for my 100 gallon tank.

I took of 1/2 star because the substrate clouds the water a lot, which is more noticeable in larger aquariums. I trickled the dechlorinated water onto a large family size salad bowl while filling the aquarium with water, at a rate of about 1 gallon per 5 minutes, to prevent disturbance of the substrate. After my aquarium was filled, the water was a very cloudy yellow grey brown, with visibility of approximately 5 inches.
Read more ›
Comment 81 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse

Most Recent Customer Reviews

Set up an Amazon Giveaway

CaribSea Eco-Complete 20-Pound Planted Aquarium, Black
Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. Learn more about Amazon Giveaway
This item: CaribSea Eco-Complete 20-Pound Planted Aquarium, Black