SEACHEM FLOURITE DARK SUBSTRATE
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.
Set-Up:
Although it is not specified in the provided description, Flourite Dark is recommended to be laid evenly across the tank bottom to provide a stable base for plant roots and root development.
| Specification | Detail |
|---|---|
| Material | Clay gravel |
| Color | Dark |
| Texture | Porous and stable |
| Usage | Planted aquariums, freshwater environments |
| Chemical Treatment | None |
| PH Impact | None |
FAQ
Can Flourite Dark be mixed with other types of gravel?
Yes, Flourite Dark may be mixed with other gravels, though it is most effective when used alone as an integral substrate bed.
Does Flourite Dark affect the pH of the water?
No, Flourite Dark is not chemically coated or treated and will not alter the pH of the water.
Is replacement of the substrate necessary over time?
No, Flourite Dark is good for the life of the aquarium and does not need to be replaced.

Brian Forsyth –
I used Flourite Dark in my planted tank and it has been stable for over a year. The dark color gives a natural look to the plants, and the porous texture supports root growth well. No pH changes were noticed, and the substrate holds together even after several water changes.
Mary Wilson –
The gravel looks great in my aquarium and the plants have grown nicely. It’s easy to spread and stays in place. I didn’t need to add any modifiers, which saved me time and cost.
Mary Ball –
I’ve tried several substrates before, and Flourite Dark stands out for its stability and natural appearance. My plants are thriving, and the water chemistry remains balanced.