Seachem Flourite Dark
Seachem Flourite Dark is a substrate of the highest quality. Composed of specially fractured stable porous clay gravel designed specifically for use in natural planted aquariums. The mineral-rich gravel is an attractive deep chocolate brown colour that is not chemically treated or coated and will not alter the delicate pH balances within the tank. The gravel is most effective when used on its own, but it may also be mixed with other types of substrates without any negative reaction. Gravel modifiers such as laterite are not necessary for the success of this gravel.
Despite the substrate being pre-washed, it should be thoroughly rinsed before use to remove any residual dust. Small amounts of initial cloudiness are normal and will clear quite quickly.
| Specification | Detail |
|---|---|
| Color | Deep chocolate brown |
| Material | Clay gravel |
| Porosity | Porous and stable |
| Chemical Treatment | None |
| Usage | Natural planted aquariums |
FAQ
Can Seachem Flourite Dark be mixed with other substrates?
Yes, it may be mixed with other types of substrates without any negative reaction.
Does Seachem Flourite Dark affect the pH of the aquarium?
No, it is not chemically treated or coated and will not alter the delicate pH balances within the tank.
How should I prepare the substrate before use?
It should be thoroughly rinsed before use to remove any residual dust. Small amounts of initial cloudiness are normal and will clear quite quickly.

Elizabeth Murray –
I used Seachem Flourite Dark in my planted tank and it has worked well. The color is deep and natural, and the gravel holds nutrients well. After rinsing, it settled quickly and didn’t cause any cloudiness. My plants have grown nicely on top of it.
Sarah Hemmings –
The substrate is easy to work with and doesn’t require any modifiers. It’s stable and provides good root support. I didn’t have to adjust my water parameters, which was a relief. The color is beautiful and matches my tank’s natural look.
Amelia Dowd –
It’s a high-quality product with a nice deep brown color. I rinsed it thoroughly and it cleared up fast. The plants have rooted well, though I did notice a bit of dust initially. Overall, very satisfied with the performance.