Seachem Flourite Sand (7 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 alone as the primary substrate, though it may be mixed with other gravels. No gravel modifiers like laterite are required. The sand is not chemically coated or treated and will not affect water pH. It is durable and designed to last the life of the aquarium, requiring no replacement.
Each 7 kg (15.4 lbs) bag occupies approximately 4,250 cm³ (260 cu. in.). To calculate the required number of bags, multiply the tank’s width by length by desired depth to determine the total volume needed.
| Specification | Value |
|---|---|
| Weight | 7 kg (15.4 lbs) |
| Volume per bag | 4,250 cm³ (260 cu. in.) |
| Material | Clay gravel |
| Use | Planted aquariums, freshwater environments |
| 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 the primary substrate.
Does Flourite Sand affect the water pH?
No, Flourite Sand is not chemically treated and will not alter the pH of the water.
How long does Flourite Sand last in an aquarium?
Flourite Sand is designed to last the life of the aquarium and does not need to be replaced.


Mary James –
I’ve used Flourite Sand in my 120-liter planted tank for over a year. The roots grow well, and the sand stays stable even with frequent water changes. No pH shifts, and the fish seem to be thriving. Easy to work with during planting.
Dan Pullman –
The sand looks natural and fits perfectly in my planted tank. It holds nutrients well and doesn’t settle or compact easily. I didn’t need to add any modifiers, which was a relief.
Fiona Coleman –
Great choice for a planted setup. The porous texture supports plant growth, and it’s easy to clean the substrate. No issues with water chemistry or fish behavior.