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Celebrating 60 years and still family run

Place your order before 1pm Monday 22nd December for Christmas delivery
Product code: 020955

Seachem Flourite Black 7Kg

Regular price £2499


Order before 1pm for next working day delivery


Seachem Flourite Black is a specially fracted, stable, porous clay gravel designed for natural planted aquariums. Its rich black appearance makes it especially suited to aquascapes, but it can be used in any freshwater setup. Flourite Black works best as a standalone substrate but can be mixed with other gravels if preferred. It is not chemically coated, will not alter pH, and lasts for the lifetime of the aquarium without needing replacement.

A 7 kg bag occupies approximately 5,500 cm³. To calculate how much you need, multiply your aquarium’s length × width × desired depth to find the required volume.

Key Points

  • Porous clay gravel ideal for planted aquariums
  • Attractive black colour enhances aquascape design
  • Can be used alone or mixed with other gravels
  • No chemical coating and will not affect pH
  • Long-lasting and never needs replacing
  • 7 kg provides approx. 5,500 cm³ of substrate volume

Directions

  • Rinse before use to remove dust created during shipping

Tips

  • Fill the tank slowly to avoid disturbing the substrate
  • Pour water into a bowl placed on the substrate to let it overflow gently
  • Initial cloudiness is normal—use mechanical filtration (e.g., filter floss) to clear it
  • For enhanced root strength and growth, add a 2.5 cm base layer of Seachem Onyx Sand beneath Flourite Black

Delivery

We offer free DPD next working day delivery to all UK mainland online orders over £49. For orders under £49, a flat fee of £5.99 applies.

For orders to the Channel Islands, Isle of Man, Scottish Highlands, and Scilly Isles, DPD provides a two-working day delivery service, and additional shipping charges may apply at checkout.

Please note: We currently do not ship to Northern Ireland.

Selected items that are not available to order online may be available for local delivery at an extra charge.

Orders placed before 1pm Monday to Friday are dispatched the same day, subject to stock availability.

Click & Collect

We offer free store collection at our Wirral store, with orders ready for collection in as little as 15 minutes, depending on stock availability. If the item is not available at the Wirral store, you can choose to place the order on hold till stock arrives.

Please note that your order will be held for 7 days. Any orders not collected within this period will be automatically cancelled and refunded in full.

Returns & Refunds

We offer a FREE 60-day returns policy. To start your return, simply give us a call on 0151 336 3616 or initiate your return through our returns portal

For our full returns policy click here

Need advice?

Call and speak to a human expert on 0151 336 3616

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