Seachem Flourite Sand (3.5 kg)
Flourite® Sand is a specially fractured, stable, porous clay gravel designed for natural planted aquariums. Its appearance is ideal for planted environments, though it can be used in any freshwater aquarium setup.
Flourite® Sand performs best when used as a standalone substrate bed. It may be mixed with other gravels, but gravel modifiers like laterite are not required. The sand is not chemically coated or treated and will not affect water pH.
Flourite® Sand is durable and supports long-term aquarium health, requiring no replacement under normal conditions.
| Specification | Value |
|---|---|
| Weight | 3.5 kg |
| Volume per bag (7 kg) | 4,250 cm³ (260 cu. in.) |
| Material | Clay gravel |
| Use | Planted aquariums, freshwater environments |
| Chemical treatment | None |
| pH impact | None |
FAQ
Can Flourite Sand be mixed with other types of gravel?
Yes, Flourite Sand may be mixed with other gravels, though it performs best when used alone as a substrate.
Does Flourite Sand affect the pH of the water?
No, Flourite Sand is not chemically treated and will not alter the pH of the aquarium water.
How much volume does a 3.5 kg bag of Flourite Sand occupy?
The volume per 7 kg bag is approximately 4,250 cm³ (260 cu. in.). For 3.5 kg, the volume is roughly half of that.

Diane Hamilton –
I’ve used Flourite Sand in my planted tank for over a year. The roots grow well, and the sand stays stable without shifting. No pH changes, and the fish seem healthy. Easy to work with during planting.
Alan Piper –
The sand looks natural and fits well with my live plants. It doesn’t clump or break easily. I didn’t need to add any substrate enhancers, which was a relief.
Adrian Lyman –
Great choice for a planted tank. The porous texture helps with root development. My tank has been stable with no issues in water chemistry or substrate settling.