---
product_id: 1627297
title: "CaribSea Eco-Complete Planted Aquarium Substrate - 20 lbs - Black Nutrient-Rich Gravel for Freshwater Planted Tanks - Promotes Healthy Plant Growth & Water Stability"
brand: "carib sea"
price: "€ 140.73"
currency: EUR
in_stock: false
url: https://www.desertcart.nl/products/1627297-caribsea-eco-complete-planted-aquarium-substrate-20-lbs-black-nutrient
store_origin: NL
region: Netherlands
---

# Nutrient-rich for vibrant plant growth Enhances water stability & filtration No fertilizer needed, low-maintenance CaribSea Eco-Complete Planted Aquarium Substrate - 20 lbs - Black Nutrient-Rich Gravel for Freshwater Planted Tanks - Promotes Healthy Plant Growth & Water Stability

**Brand:** carib sea
**Price:** € 140.73
**Availability:** ❌ Out of Stock

## Summary

> 🌿 Grow smarter, not harder — your planted tank’s secret weapon!

## Quick Answers

- **What is this?** CaribSea Eco-Complete Planted Aquarium Substrate - 20 lbs - Black Nutrient-Rich Gravel for Freshwater Planted Tanks - Promotes Healthy Plant Growth & Water Stability by carib sea
- **How much does it cost?** € 140.73 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/1627297-caribsea-eco-complete-planted-aquarium-substrate-20-lbs-black-nutrient)

## Best For

- carib sea enthusiasts

## Why This Product

- Trusted carib sea brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Root Powerhouse:** Packed with essential nutrients to fuel strong, healthy aquatic plant roots.
- • **Effortless Growth:** Natural mineral blend eliminates the need for additional fertilizers—set it and forget it.
- • **Balanced Ecosystem:** Promotes biological filtration that reduces nitrates and stabilizes water chemistry.
- • **Sleek & Sustainable:** Deep black gravel adds a modern aesthetic while supporting a thriving freshwater planted tank.
- • **Trace Element Boost:** Enriched with vital trace minerals to enhance plant health and tank vitality.

## Overview

CaribSea Eco-Complete is a 20 lb black substrate designed specifically for freshwater planted aquariums. It delivers essential nutrients and trace elements to promote robust plant root development and vibrant growth. Its porous structure supports biological filtration, reducing nitrates and maintaining water stability, all without the need for added fertilizers. Ideal for aquarists seeking a low-maintenance, nutrient-rich foundation that ensures a healthy, thriving planted tank environment.

## Description

CaribSea Eco-Complete Planted Aquarium Substrate is the ultimate solution for freshwater planted tanks, providing a nutrient-rich gravel for vibrant plant growth. This 20 lb bag of black substrate is designed to support healthy root development and provide the essential nutrients aquatic plants need to thrive. Enriched with trace elements, Eco-Complete helps promote biological filtration, stabilizing the water and supporting nitrate reduction for a balanced tank. Unlike many substrates, it requires no additional fertilizers, offering an all-in-one solution for low-maintenance aquarium care. The porous structure of the substrate ensures efficient nutrient cycling, making it an ideal choice for aquarists who want healthy plants without the hassle. Whether setting up a new planted aquarium or upgrading an existing one, Eco-Complete provides a reliable, long-lasting foundation that supports both plant health and overall aquarium stability, ensuring your planted tank flourishes.

## Features

- Nutrient-Rich Substrate: CaribSea Eco-Complete Black Substrate is packed with essential nutrients to support healthy plant growth in freshwater planted tanks.
- Ideal for Planted Tanks: Specially designed for aquatic plants, it promotes strong root development and vibrant growth, creating a healthy, thriving tank.
- Improves Water Stability: Supports biological filtration, reducing nitrates and maintaining a balanced environment for both fish and plants.
- Contains Trace Elements: Eco-Complete is enriched with essential trace elements, improving plant health and promoting tank stability.
- No Fertilizer Needed: With a blend of natural minerals and nutrients, this substrate reduces the need for fertilizers, offering a low-maintenance solution for planted tanks.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | CaribSea, Inc |
| Part Number | 770 |
| Item Weight | 20 pounds |
| Product Dimensions | 18 x 12 x 2 inches |
| Item model number | 770 |
| Is Discontinued By Manufacturer | No |
| Size | 20 POUNDS |
| Color | Black |
| Material | Plastic |
| Item Package Quantity | 1 |
| Special Features | Substrate |
| Usage | Parasites |
| Included Components | CaribSea Eco-Complete 20-Pound Planted Aquarium, Black |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | kkkk |

## Product Details

- **Brand:** Carib Sea
- **Material:** Plastic
- **Special Feature:** Substrate
- **Item Weight:** 20 Pounds
- **Specific Uses For Product:** Aquarium Substrate
- **Color:** Black
- **Included Components:** Gravel
- **UPC:** 611102240883 008479007704 827165711363 008479017703 789554356541 760625104643
- **Global Trade Identification Number:** 00611102240883, 00008479007704
- **Manufacturer:** CaribSea, Inc

## Images

![CaribSea Eco-Complete Planted Aquarium Substrate - 20 lbs - Black Nutrient-Rich Gravel for Freshwater Planted Tanks - Promotes Healthy Plant Growth & Water Stability - Image 1](https://m.media-amazon.com/images/I/81oOxQrQDBL.jpg)
![CaribSea Eco-Complete Planted Aquarium Substrate - 20 lbs - Black Nutrient-Rich Gravel for Freshwater Planted Tanks - Promotes Healthy Plant Growth & Water Stability - Image 2](https://m.media-amazon.com/images/I/91V7oHtvWhL.jpg)
![CaribSea Eco-Complete Planted Aquarium Substrate - 20 lbs - Black Nutrient-Rich Gravel for Freshwater Planted Tanks - Promotes Healthy Plant Growth & Water Stability - Image 3](https://m.media-amazon.com/images/I/81F713lLz2L.jpg)
![CaribSea Eco-Complete Planted Aquarium Substrate - 20 lbs - Black Nutrient-Rich Gravel for Freshwater Planted Tanks - Promotes Healthy Plant Growth & Water Stability - Image 4](https://m.media-amazon.com/images/I/91n2tUNmFOL.jpg)
![CaribSea Eco-Complete Planted Aquarium Substrate - 20 lbs - Black Nutrient-Rich Gravel for Freshwater Planted Tanks - Promotes Healthy Plant Growth & Water Stability - Image 5](https://m.media-amazon.com/images/I/91f5RCE3yeL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: how many bags should i purchase to fill a 55 gallon tank?**
A: It all depends on the length/dimensions of your tank. I used it on my 50 gallon that is 36" long and only needed about 2 1/2 bags to get 3 inches. If you have a tall tank the less substrate you will need.

**Q: can i add to existing planted tank that is also inhabited by tropical fish without harming my fish**
A: Yes you can add it into and established tank, that is what I did, I had a tank full of black sand and I removed all of my plants and driftwood int o a food safe container filled with siphoned tank water, then I removed my fish and placed them into food safe containers.  Then I removed 75-80% of the sand from my tank, cleaned the debris that was left over and poured in the Eco complete in, mixing it in with the sand.  I had reserved my tank water and poured it back into a container, although unlike other substrates this does not cloud the water.  After I filled the tank about 25% I added the plants and driftwood back, then added some more water and my fish and topped the tank off with fresh water.  It was a half day process but well worth it, something I would do again!

**Q: Is this okay for Cory Cats?  Sharp edges?**
A: I have 7 cory cats, 4 dojo loaches and 3 hillstream/chinese loaches and they don't mind it at all.  It is like sand, I have the fine black one and I got it just for them...well and my plants too!

**Q: should you wash this before you add it to your tank?**
A: I didn't wash it, because it contains beneficial bacteria. I had no issues. It did not make the water cloudy at all. I don't recommend washing it.

## Frequently Bought Together

- CaribSea Eco-Complete Planted Aquarium Substrate - 20 lbs - Black Nutrient-Rich Soil for Freshwater Planted Tanks - Promotes Healthy Plant Growth & Water Stability
- API ROOT TABS Freshwater Aquarium Plant Fertilizer 0.4-Ounce 10-Count Box
- Fluval 12694 Plant and Shrimp Stratum for Freshwater Fish Tanks, 8.8 lbs. – Aquarium Substrate for Strong Plant Growth, Supports Neutral to Slightly Acidic pH

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-26*