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5 Best Aquarium Substrates of 2025

Last Updated - 2025/04/29

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Seachem

Seachem Flourite Black, 7 Kg/15.4-Pound

Seachem

CA$69.94

More Details
Main highlights
- The premium substrate for the planted aquarium providing essential nutrient to plant root structure long term for success planted aquariums
- Specially fracted, stable porous clay gravel for the natural planted aquarium
- Not chemically coated or treated and will not alter the pH of the water
- Never needs replacement and remains effective for the life of the aquarium
- Its appearance is best suited to planted aquaria, but may be used in any aquarium environment
CA$69.94
2
Best Value
12% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Seachem
12% Off

Seachem Flourite Black Sand, 7 Kg/15.4-Pound

Seachem

CA$51.37

CA$59.00
(12% Off)

More Details
Main highlights
- The premium substrate for the planted aquarium providing essential nutrient to plant root structure long term for success planted aquariums
- Specially fracted, stable porous clay gravel for the natural planted aquarium
- Not chemically coated or treated and will not alter the pH of the water
- Never needs replacement and remains effective for the life of the aquarium
- Its appearance is best suited to planted aquaria, but may be used in any aquarium environment
CA$51.37
CA$59.00 (12% Off)
3

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Fluval

Fluval 12693 Plant and Shrimp Stratum, 4.4-Pound, Black, 2 kg (Pack of 1)

Fluval

CA$24.97

More Details
Main highlights
- Suitable for live plants or shrimp
- Stimulates strong aquarium plant growth
- Promotes neutral to mildly acidic pH
- Fluval Stratum is made of mineral rich volcanic soil
- 4.4 lb bag
CA$24.97
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Aqua Natural

Aqua Natural Diamond Black 10lb, Premium Gravel and Substrate for Aquariums, Fish Tanks and terrariums, 1-2mm

Aqua Natural

CA$27.35

More Details
Main highlights
- Promotes good bacteria growth because of its large surface area
- Great for Aquatic Plants
- Contrasts well with a planted tank
- Aquarium Safe - 100% natural
CA$27.35
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Fluval

Fluval 12697 Plant and Shrimp Stratum, 8.8-Pound, Black

Fluval

CA$44.99

More Details
Main highlights
- Suitable for plants or shrimp
- Stimulates strong plant growth
- Promotes neutral to mildly acidic pH
- Mineral rich volcanic soil
- 8.8 Pound bag
CA$44.99

5 Best Aquarium Substrates of 2025

Seachem Flourite Black, 7 Kg/15.4-Pound

Seachem Flourite Black Sand, 7 Kg/15.4-Pound

Fluval 12693 Plant and Shrimp Stratum, 4.4-Pound, Black, 2 kg (Pack of 1)

Aqua Natural Diamond Black 10lb, Premium Gravel and Substrate for Aquariums, Fish Tanks and terrariums, 1-2mm

Fluval 12697 Plant and Shrimp Stratum, 8.8-Pound, Black

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