Seachem Onyx Sand 15.4 lbs- Premium natural sand for the planted aquarium.
- Good for the life of the aquarium.
- Supports optimal KH levels for freshwater planted aquariums.
- Rich in carbonates.
Overview:
Onyx
Sand is a naturally dark gray sand that perfectly complements and
enhances the appearance of any aquarium. It supports optimal KH levels
for freshwater planted aquariums. Although ideally suited to planted
aquaria, it may be used in any aquarium environment. Onyx Sand 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. Onyx Sand is not chemically coated or treated, and as a
carbonate rich sand, it has a slight buffering capacity that may raise
pH by 0.1 - 0.5 pH units (depending on source water characteristics).
Onyx Sand is good for the life of the aquarium and need not be replaced.
Size: 15.4 lbs (7 kg)