Eco Complete Plant Substrate – 20 lb Red
CaribSea’s Eco-Complete Planted Aquarium Substrate is mineralogically complete, providing all essential nutrients for thriving aquatic plants.
- Contains iron, calcium, magnesium, potassium, sulfur, and over 25 other essential elements
- Iron-rich formulation eliminates the need for laterite supplementation
- Nitrate and carbonate free — does not increase pH or carbonate hardness over time
- Free from artificial dyes, paints, or chemical coatings
- Contains live heterotrophic bacteria to convert fish waste into natural plant food
- Helps establish a natural biological balance, accelerating aquarium cycling
| Specification | Detail |
|---|---|
| Weight | 20 lb |
| Color | Red |
| Package Type | Liquid Amazon buff |
| Application | Planted aquariums |
FAQ
Does Eco Complete contain any artificial additives?
No, Eco Complete does not contain artificial dyes, paints, or chemical coatings.
Will this substrate affect the pH or carbonate hardness of the water?
No, it is nitrate and carbonate free and will not increase pH or carbonate hardness in the long term.
Is the substrate suitable for all types of aquarium plants?
Yes, it is specifically formulated for planted aquariums and provides all necessary minerals for lush plant growth without promoting algae.

Kevin Ellison –
My planted tank has grown much more vibrant plants since switching to Eco Complete. The color is natural and the plants are thriving without algae issues. No need to add laterite or supplements anymore.
Audrey Short –
The substrate helped my new tank cycle faster. I noticed fish waste being converted into plant food, which made the plants grow stronger and healthier.
Gavin Slater –
It’s easy to mix and works well in my 55-gallon tank. Plants have grown well, though I did notice a slight initial settling period. Overall very satisfied.
Lily Rees –
No artificial smells or colors. The iron content supports green, healthy plant growth. I’ve used it for over six months and still see good results.