Seachem Flourite Dark 7kg

Seachem Flourite is a stable, porous clay gravel substrate that supports healthy root growth in the natural planted aquarium for its entire life.

• Premium natural gravel for the planted aquarium.
• Good for the life of the aquarium.

Seachem Flourite Dark is a specially fracted stable porous clay gravel for the natural planted aquarium. Its appearance is best suited to planted aquaria, but may be used in any freshwater aquarium environment. Flourite Dark is most effective when used alone as an integral substrate bed, but it may be mixed with other gravels. Gravel modifiers such as laterite are not necessary. Flourite Dark is not chemically coated or treated and will not alter the pH of the water. Flourite Dark is good for the life of the aquarium and need not be replaced.

The Seachem Flourite Dark 7kg forms the base layer of a planted tank — see our guide to Substrate & Aquasoil for how to pick and layer substrate for healthy root growth.

Specifications

A fracted, stable, porous clay gravel for the planted aquarium. It is not chemically coated or treated, will not alter pH, and will not soften or break down once wet.

It works with undergravel filters, and it lasts the life of the aquarium — it is never exhausted and never needs replacing. Flourish Tabs and the Flourish liquid range may be added on top of it but are not required.

Expect the filter to need cleaning more often for the first week or so while the fines settle out.

Setup & Use

Rinse before use. It is pre-washed but picks up dust in transit, and some fine material will remain however long you rinse — that is normal and does not reduce its value to the plants.

Fill the tank gently: stand a bowl on the substrate and pour into the bowl so the water overflows softly onto the bed. Initial cloudiness is expected and clears with mechanical filtration over a day or two.

Use it as the whole substrate rather than as a layer under gravel. No laterite or other gravel modifier is needed.

Freshness & Storage

Every batch we dispatch carries a minimum of 6 months' remaining shelf life. Store this product in a cool, dry place away from direct sunlight, with the cap or inner foil closed tightly after each use.

Filter media and substrates carry no manufacturing or expiry date — their working life begins on first contact with water, not on the shelf.

Returns & Replacement

Returns are accepted within 7 days of delivery, provided the item is unused and in its original packaging. Manufacturer-sealed items cannot be returned once the seal is broken, and sale-priced items are not refundable.

If your item arrives defective or damaged, message us on WhatsApp with your order number — or email us, if you would rather — and we will replace it. Approved replacements are delivered within 3 to 5 business days. Transit damage is covered by insurance on every shipment. If tracking shows delivered but nothing reached you, tell us within 72 hours, which is the reporting window Indian couriers allow. Damage caused during installation or use is not covered; replacement spares for such cases are chargeable.

Full terms are on our Cancellation & Returns page.