CaribSea Eco-Complete Planted Aquarium Substrate

By CaribSea
Rated 4.5556 out of 5 stars


Selected: Color:


Selected: Color:

$27.86Chewy Price
$29.99Chewy Price
$26.47Autoship Price
Autoship (Save an extra 5%)

Why Autoship?

  • Save 5% on all future Autoship orders
  • Set your schedule based on your pet's needs
  • No fees, no commitments - skip, change or cancel anytime.
In Stock
FREE 1-3 day delivery on first-time orders over $35

About This Item


  • Ready-to-use with volcanic basalt rich in minerals and essential elements to support plant growth and health.
  • Bi-modal grading separates into a fine bottom layer for root development, and a coarse top layer to enhance root oxygen uptake.
  • Dual-biotic formula contains heterotrophic bacteria to convert fish waste into plant food, and mycorrhizal symbionts for strong root development.
  • Biologically complete with beneficial microorganisms that help cycle new aquariums faster; it comes packed in Liquid Amazon™ water conditioner.
  • Natural deep black color encourages vibrant fish colors and reduces stress, with no artificial dyes, paints or chemicals.

See More


Play Video: Learn More About CaribSea From Our Team of Experts
Learn More About CaribSea From Our Team of Experts

Soluble Potash0.28%

Derived from: Shale.

Humic Acid0.03%
Bacillus Amyloliquefaciens1166 cfu/g
Bacillus Licheniformis1166 cfu/g
Bacillus Subtilis1166 cfu/g
Glomus Intraradices0.002775 spores/g
Glomus Mosseae0.002775 spores/g
Glomus Aggregatum0.002775 spores/g
Glomus Etunicatum0.002775 spores/g

Frequently Bought Together

CaribSea Super Naturals Jungle River Aquarium Gravel, 40-lb bag
Rated 4.6667 out of 5 stars
$33.99Chewy Price
Underwater Treasures Eucalyptus Root Fish Wood, Medium
Rated 4.8571 out of 5 stars
$24.99Chewy Price
Total Price: $86.84

Compare Similar Items

Customer Rating
Rated 4.5556 out of 5 stars
Rated 3.9242 out of 5 stars
Rated 4.6786 out of 5 stars
Rated 4.3182 out of 5 stars
Rated 5 out of 5 stars
$27.86Chewy Price
$24.99Chewy Price
$26.99Chewy Price
$19.99Chewy Price
$21.24Chewy Price
$26.47Chewy Price
$20.18Chewy Price
Fish TypeGoldfish, Koi & Pond FishGoldfish, Koi & Pond FishGoldfish, Koi & Pond FishGoldfish, Koi & Pond FishGoldfish, Koi & Pond Fish
Aquarium TypePondPondPondPondPond

Questions & Answers

28 Customer Questions

how long can I store in original bags I am not planning on setting up my tank until spring but this is to good a price to pass up also how much will I need for a least a 2" bed in a 55 gal tank
Answer by ChewyNov 10, 2018
Eco complete has no shelf date on the product itself because it is good for many months into years if stored at room temperature. The bacteria in it are spored and do not become active unless they are exposed to a food source. To fill a tank 1 inch thick with substrate, it is roughly equivalent to 1 pound of substrate per gallon. To fill a tank 2 inches thick with substrate, it is roughly equivalent to 2 pounds of substrate per gallon.

Is this used as a base layer with other substrate layered on top of it?
Answer by ChewyDec 20, 2018
This substrate is biologically complete, with beneficial microorganisms that help cycle new aquariums faster. However, it may also serve as a bottom layer with your choice of non-carbonate substrate.

I have a 180 gallon tank. I plan to use tap water and treat it with a water conditioner to remove chlorine and heavy metals. Should I put the substrate in after the water has been treated?
Answer by ChewyFeb 05, 2019
For new aquarium setups it's recommended to pour in the substrate and then fill the aquarium with de-chlorinated tap water.

Is there a difference between the red and black version? I don't want to harm my fish by choosing the wrong one.
Answer by ChewyAug 05, 2019
The only difference is the color. Please note, this may elevate pH above neutral and may not be suitable for Discus sp., P. alta and sensitive freshwater shrimp.

ReviewsWrite a Review

Rated 4.5556 out of 5 stars
45 Ratings
Would recommend to a friend

45 Customer Reviews

Rated 5 out of 5 stars
By Rusty on Sep 15, 2023

Very Natural looking!

This was purchased to replace a decorative substrate, with a single plant in a Beta Bowl. The plant is doing better, and the gravel is natural looking. Natural looks is vital to a fish's wellbeing. The Beta is happier. Natural look, and a live plant to rest on. I am experienced with planted aquariums, and this substrate has already proven itself.

Rated 5 out of 5 stars
By Jens on Jul 15, 2023

WorksFine for me

We dumped it Into a 55 we were changing the substrate on, clouded up pretty bad but after adding clarifier overnight with pump Off and just air stones then running filter next Morning it’s clear within an hour. It sure if it’s working we haven’t had it long enough and I haven’t planted anything yet, fish are out of the tank until I know it’s Fully cycled again, will say shipping was terrible. Don’t order more than one bag at a time or they will throw it all together in kne box and well. I’m sure you can figure out how bad that was. Cust service Immediately shipped out replacements in all separate orders and arrived in perfect condition. Excited to see how the tank does now with this

Rated 5 out of 5 stars
By wendy on Oct 22, 2022

Be patient it's worth it

I had sand before and started to hate it. It was great for holding plants but drifted too much. This has the best of both worlds. It has the bottom layer for the roots and the gravel top does not shift. Use a shallow bowl or plate to add water slowly just like you would with sand. I filled the tank halfway, then let it settle. In about 2 days it was clearing up. I carefully added the rest of the water and started the filter (with the old filter pad). Next say it was clear enough to put the fish back. I cleaned the filter and put in new media. They really should put this info on the bag. It looks great. I couldn't be happier with it.

Rated 5 out of 5 stars
By Asti on Mar 29, 2023

Honestly Great

Best gravel for my plants, snails and Pleco so far. Honestly

Rated 5 out of 5 stars
By Bill on Mar 25, 2023

Well worth it in my opinion

Definitely great clean and great for starting up and aquarium.

Rated 3 out of 5 stars
By Daniel on Sep 26, 2022

Just buy it from the store

my advice to anyone reading this is to just go buy it in person if you can. sure it's a little more expensive, but then at least you can physically inspect the bag yourself and check for leaks. The bag I had ordered and received has a small hole and leaks gradually. this sucks because I'm still gathering some stuff for my aquarium before filling it up.

Rated 5 out of 5 stars
By Bob1330 on Nov 13, 2022


Perfect gravel for plants. Cycling and plant growth have been fantastic.

Rated 5 out of 5 stars
By TNTTim on Jun 20, 2022

Great product

Many reviews rated this product very low due to poor water clarity. If installed properly there is no issue. I have a 110 gallon aquarium. It was time to tear it down and replant. I removed all of the water and some of the old gravel. I left some old gravel in the tank, then topped the gravel off with 2 bags of substrate followed by a thin layer of new gravel. Using a garden hose to fill up the tank I directed the water into a glass saucer. The end result crystal clear water in the aquarium.

Rated 5 out of 5 stars
By Deedee on Jun 11, 2022

great product

my aquarium plants are growing like crazy. This substrate helps to keep the environment natural for the health of both the fish and plants. By keeping the environment natural letting the plants use the waste from fish there is less clean-up.

Rated 3 out of 5 stars
By Fred on May 8, 2022

Material is good. Not great though.

My only real issue with the product is the sediment that comes in the bag. The gravel itself is supposed to have at least some and I wasn't misunderstanding about that. The amount of sediment these had in them was crazy though. I already had 3 bags of black in my tank and adding 3 red clouded the water for a day easily and then there was so much that settled out, everything in the tank was brown. Took 3 days of intermittent vacuuming to clean it up. The bags also arrived damaged and leaking.