Seachem Flourite Black Sand 7.7 lb Planted Aquarium Substrate
Seachem Flourite Black Sand is a premium fine-grain planted aquarium substrate made from stable porous clay. Its natural black color creates a bold, elegant aquascape while helping live plants, colorful fish, shrimp, rocks, and driftwood stand out beautifully.
This long-lasting substrate is designed for freshwater planted aquariums and can be used alone or mixed with other aquarium substrates. Unlike coated or soft substrates, Flourite Black Sand does not break down over time and does not require routine replacement, making it a strong long-term choice for planted tanks and aquascapes.
Key Features
- Fine Black Sand Texture: Creates a clean, natural-looking planted aquarium layout.
- Great for Live Plants: Porous clay structure supports healthy root development.
- Bold Aquascape Contrast: Rich black color enhances green plants, colorful fish, shrimp, and decor.
- Long-Lasting Substrate: Does not break down or require routine replacement over time.
- Use Alone or Mixed: Can be used as the main substrate or blended with other aquarium sands and gravels.
- Freshwater Aquarium Safe: Suitable for fish, shrimp, snails, and live plants when rinsed and used properly.
- 7.7 lb Bag: Useful for nano tanks, small planted aquariums, accent areas, or deeper planting zones.
Product Details
- Brand: Seachem
- Product: Flourite Black Sand
- Size: 7.7 lb bag
- Type: Fine porous planted aquarium substrate
- Color: Natural black
- Aquarium Type: Freshwater planted aquariums
- Best For: Planted tanks, shrimp tanks, aquascapes, community aquariums, and root-feeding plants
Best For
- Freshwater planted aquariums
- Nano planted tanks
- Shrimp tanks
- Community aquariums
- Root-feeding aquarium plants
- Dark substrate aquascapes
- Low-tech and high-tech planted tanks
- Custom aquascape layouts
Plant Benefits
Seachem Flourite Black Sand provides a stable substrate base for rooted aquarium plants. Its fine texture helps plants anchor while creating a smooth, finished aquascape appearance.
For demanding plants or heavy root feeders, Flourite Black Sand works best when paired with root tabs, liquid fertilizers, proper lighting, and regular aquarium maintenance.
Usage Tips
- Rinse thoroughly before use to help reduce initial cloudiness.
- Add water slowly over a plate, bowl, or plastic bag to avoid disturbing the substrate.
- Use a deeper layer in areas where heavy planting is planned.
- Pair with root tabs or liquid fertilizers for nutrient-demanding plants.
- Allow filtration to clear any remaining fine particles after setup.
Coverage Guide
Coverage will vary based on tank dimensions, desired substrate depth, and aquascaping style. A 7.7 lb bag is best for nano aquariums, small planted tanks, accent sections, or deeper planting zones in larger aquascapes.
For larger tanks or deeper substrate beds, multiple bags may be needed.
Why Choose Seachem Flourite Black Sand?
Seachem Flourite Black Sand is a strong choice for aquarists who want a fine-textured planted tank substrate with a bold black appearance. It creates a clean, high-contrast look while supporting rooted aquarium plants long term.
Because it does not break down over time, Flourite Black Sand is a practical option for hobbyists building a long-lasting freshwater planted aquarium.
Frequently Asked Questions
Do I need to wash Seachem Flourite Black Sand before use?
Yes. Rinse thoroughly before adding it to the aquarium to help remove dust and reduce initial cloudiness.
Does Flourite Black Sand need special additives?
It can be used on its own, but root tabs and liquid fertilizers are recommended for best results with nutrient-demanding plants.
Will Flourite Black Sand affect my water chemistry?
Flourite Black Sand is stable and is not intended to significantly alter aquarium pH or water chemistry when used as directed.
Can I use Flourite Black Sand with corydoras or loaches?
Yes. The fine texture is suitable for many bottom-dwelling freshwater fish when rinsed and used properly.
Can Flourite Black Sand be mixed with other substrates?
Yes. It can be used alone or mixed with other sand, gravel, or planted tank substrates for a custom aquascape.
Does Flourite Black Sand need to be replaced?
No. It is long-lasting and does not break down or require routine replacement.
Is Flourite Black Sand safe for shrimp and snails?
Yes. When rinsed and used properly, Flourite Black Sand is suitable for freshwater fish, shrimp, snails, and live plants.
Available at Tropical Treasures Wyo
Shop Seachem Flourite Black Sand 7.7 lb Planted Aquarium Substrate online or in-store at Tropical Treasures Wyo in Cheyenne, Wyoming. This dark fine-grain planted tank substrate is a great choice for freshwater planted aquariums, shrimp tanks, aquascapes, root-feeding plants, and community aquarium displays.
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