Great Aquariums Start Here
Live Chat Support
    Free Shipping On $75+
  • FREE Shipping On $75+
  • 14-Day Low Price Guarantee
  • Low Price Guarantee
  • Same Day Shipping
  • Same Day Shipping
FREE Shipping on
Orders Over $75
Standard ground shipping (1-7 business days) starts at a low $4.99 and most orders over $75 ship FREE. Learn More
If you find a product we sell for a lower price at another online store, we will match their price—today and up to 14 days after you've purchased the item! Learn More
Same Day Shipping
We promise to ship your order as fast as humanly possible. In fact, 99% of orders placed before 6 pm EST ship the same day! Learn More
Home » Freshwater Aquarium Supplies  » Plant Care & Fertilizers  » Gravel Substrate  »  CaribSea Eco-Complete Planted Aquarium Substrate 20 lb
CaribSea Eco-Complete Planted Aquarium Substrate 20 lb

CaribSea Eco-Complete Planted Aquarium Substrate 20 lb

Average Rating 4.5 13
Write A Review
Product Review
We value your opinion & experience
Thank you for taking the time to review our products!

This is a Product Review for: CaribSea Eco-Complete Planted Aquarium Substrate 20 lb
Name to display on the review:
Location (ex: Anaheim, CA):
Your experience level:
How would you rate this product?
Review Title:
Write your review:
(Please focus on product quality and performance)
In Stock: Order by 6PM EST for same-day shipping (M-F)
Item #:
Notify Me
Just enter your email address below and we'll let you know when the product you are looking for becomes available!

Item Code:
Your Email:
Add to Cart or Notify Me
This item is temporarily unavailable but will be back in stock soon.

Item #
Click the Add To Cart button below if you'd like to reserve this item today. Any other items included in your order will be immediately processed and shipped. We will ship this item separately as soon as it arrives. We will not charge you for this item until it ships and you will incur no additional shipping charges.
Enter your email address in the field below and click the Notify Me button if you'd like us to send you an email when this item becomes available. Although you will be immediately notified when we have stock on hand, we will not reserve any units for you; you must return to our website and place an order.

+ Add to Wishlist
Add to Wishlist
Select Wish List:
Comments (up to 200 characters):
Quantity Desired:
Quantity Received:
FREE Shipping Promo offers FREE standard ground shipping via UPS on orders of $75 or more for orders containing non-overweight or oversize items (orders which do not qualify for our FREE shipping promotion will still be shipped at a discounted rate).

Terms and Exclusions:
  • Offer valid only on orders shipping within the contiguous United States. Orders shipping to Alaska, Hawaii, Puerto Rico, Guam or other US Territories do not qualify for this promotion.

  • This promotion does not apply to items requiring expedited shipping, such as refrigerated products, frozen products or live rock.

  •'s FREE shipping promotion does not include products sent in oversized or particularly heavy boxes. This may include but is not limited to aquariums, canopies, chillers, external water pumps, metal halide magnetic ballasts, stands and substrate/sand. These items may be subject to additional shipping handling charges. Should shipping surcharges apply, they will be noted on individual product pages and / or displayed during check-out. We will, however, pay a portion of the shipping charges for these orders.

  • Shipping surcharges, such as special handling are NOT covered under the FREE shipping promotion.

  • Shipping charges for returned merchandise is non-refundable. Please read's Return PolicyPolicy for more information.

  • Price matched (Low Price Guarantee) or discounted orders do NOT qualify for our free shipping promotion.
If you find a product we sell for a lower price at another online store, we will match their price to ensure you always pay the lowest amount when you shop with us.

Enter the price, shipping cost and website address where you found the lower price. Then click the "Add to Cart" button. We will review the lower price while processing your order and make any necessary reductions before your order ships. Some restrictions apply. See Terms & Conditions.
Shipping Cost*
Competitor's Website*
*Required information
Marine Depot 60-day Returns
At Marine Depot, we stand behind our products. That is why we offer a 60-day return period: one of the best in the industry! Learn More

CaribSea Eco-Complete Planted Aquarium Substrate 20 lb Information

Caribsea Eco-Complete Planted Aquarium Contains Iron, Calcium, Magnesium, Potassium, Sulfer plus over 25 other elements to nourish your aquatic plants. Eco-Complete Planted Aquarium Substrate contains all the mineral nutrients needed for luziriant aquatic plant growth without nuisance algae! The Eco-Complete is Iron rich which eliminates the need for laterite and is also Nitrate and carbonate free which will not increase pH or carbonate hardness. There is no artificial dye, paint or chemical coating because it`s real! The Eco-Comlete also contains live Heterotrophic Bacteria to rapidly convert fish waste into natural food for your aquatic plants. The Eco-Complete also creates a natural biological balance which makes cycling in a new aquarium faster and safer. With it`s unsurpassed MacroPorosity for healthy roots and bacterial efficieny - you would have to buy 4 bags of ordinary gravel to equal the surface are of this one bag of Eco-Complete Planted Aquarium! Spherical grains for optimum diffusion performance.


20-pound bag.

Manufacturer Info

At CaribSea we take aquariums seriously. Since 1972 we have supplied hundreds of public aquariums, zoos, aquaculture facilities, public and private institutions, and hundreds of thousands of dedicated aquarists with the highest quality marine and freshwater products. CaribSea has been in the forefront of the principle that substrates are a piece of equirment, not just a decorative afterthought. Caribsea substrates are as precisely engineered as any piece of advanced equipment used by today`s hobbyists and professionals. CaribSea products are the chemical support, biological filtration, and biodiversity backbone for many of the most spectacular aquatic displays ever created. We are now celebrating our 35th year in the business, and our product line has continued to grow; making CaribSea your aragonite source and so much more.

CaribSea Eco-Complete Planted Aquarium Substrate 20 lb Reviews

Average Rating
(13 reviews)
Sort Reviews By:
of 2


Reviewers Rating Average

Posted: 3/17/2014 from GREENSBURG, IN UNITED STATES
3.0 5
Experience Level: Intermediate

Comments: Its an ok substrate, but for the price go get a bag of dirt and pool filter sand and you will have even more growth from you plants than with eco incomplete. After about 2 months all the nutrients are all used up so save the money and get something better

0 of 1 People found this review helpful, did you? Yes No

Avoid! Raises pH. Kills Fish

Reviewers Rating Unsatisfactory

Posted: 4/28/2013 from HOUSTON, TX UNITED STATES
0.5 5
Experience Level: Intermediate

Comments: I have been having problems with maintaining a stable pH of my water so I removed everything except the eco-complete, live plants, 4 otos, 4 wag-tails, 2 bamboo shrimp, and about 8 assassin snails, yet the pH keeps going up to 8.2. I did 50% water changes twice - 4 days apart, had the CO2 off during the entire time, and just had the filter and lights running as normal (I have an Eheim 2260 filter with coarse and fine polyester floss - mostly used for water clarity rather than biofilter). I have noticed White Rocks in the substrate since the beginning but I figured that since the eco-complete wasn't supposed to raise the pH, it didn't matter. Several fish have died and the only species surviving appear to be the ones that tolerate high pH, as listed above. I searched the web and saw that there was a problem with a contaminated batch in 2005 also with "white rocks" that also caused problems with another customer's pH. I purchased 160 lbs on November 27, 2012 from a local chain. I thought ecoComplete wasn't supposed to increase the pH; however, I suspect that this batch was contaminated. I tested the white rocks this evening with diluted muriatic acid and they fizzled like crazy. The other non-white rocks in the mix had no reaction, even after I increased the concentration, except for a smaller white rock that I missed when trying to remove all the white rocks so I could test the non-white ones. So, if you get this and notice white rocks in it, AVOID. Or, if you want to take a chance, at least test it with some dilute muriatic acid (you can find the concentration on the web when you search for "test rock safe aquarium muriatic acid concentration). I have contacted Carib-Sea to let them know and hope they can help me get the substrate replaced with non-contaminated stuff or at least something similar that won't kill fish! Will keep you updated of their response.

2 of 4 People found this review helpful, did you? Yes No

eco complete black

Reviewers Rating Great

Posted: 5/27/2011 from Hyrum, UT UNITED STATES
3.5 5
Experience Level: Intermediate

Comments: I do like this product I only with it was All black. It is about 5-10% brown mixed in. But oh Well my plants dont care

1 of 6 People found this review helpful, did you? Yes No

discus king

Reviewers Rating Excellent!

Posted: 12/26/2010 from ALBUQUERQUE, NM UNITED STATES
5.0 5
Experience Level: Expert

Comments: Eco-Complete is the most awesome product I've ever seen. My plants are growing out of the tank. I've already cut them back three times and I've only used it for 3 months.

22 of 22 People found this review helpful, did you? Yes No

Excellent Substrate

Reviewers Rating Excellent!

Posted: 3/5/2010 from ALABASTER, AL UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: Great color and size. I really like that it had a few larger pieces of gravel in it, to give it a bit of variation. Doesn't cloud my water when anchoring plants.

5 of 5 People found this review helpful, did you? Yes No

Great Product

Reviewers Rating Excellent!

Posted: 9/20/2008
5.0 5
Experience Level: Intermediate

Comments: Love the product! Great quality, and works great for plants!

7 of 7 People found this review helpful, did you? Yes No


Reviewers Rating Excellent!

Posted: 5/5/2008 from FORT IRWIN, CA UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: First time used it did cloud my water for about 1 hour max. Other than that is subtrate is absolutely great!.

7 of 8 People found this review helpful, did you? Yes No


Reviewers Rating Excellent!

Posted: 1/14/2008 from BUENA PARK, CA UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: I have now bought 6 bags of this stuff and I will be buying more in the future. My plants love this substrate and it is really easy for me to place the plants into it. It is ready to go right out of the bag just as it says. I would reccomend this product to anyone and Marine Depot's price can't be beat. Other places want around 30 dollars for this great product.

11 of 11 People found this review helpful, did you? Yes No

Plant Media

Reviewers Rating Excellent!

Posted: 10/7/2007 from CONWAY, AR UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: My plants have done very well so far. Roots seem to like the media very well. Shipping was prompt and well packaged.

9 of 9 People found this review helpful, did you? Yes No


Reviewers Rating Excellent!

5.0 5

Comments: Works well, needs no rinsing unlike other plant substrates does not bounce PH. Black color looks great under light and enhances color of fish. Plants grow well and spread out nicely.

46 of 48 People found this review helpful, did you? Yes No

of 2

Try these related products

WIN A $499 ANGEL LED! Sign up for our best deals, how-to videos and a chance to win a Euroquatics A1P Angel LED!