Onyx Sand - Seachem

Being rich in carbonates, Onyx provides advantages for any kind of plant capable of feeding bicarbonates (practicing plants). Onyx Sand ™ can be used with other funds, but is more effective on its own. In additions as in the case of the laterite or other competing products are not necessary. Onyx Sand ™ should never be replaced, it remains effective throughout the life of the aquarium, it is not chemically treated and does not alter the pH of water. Although it is pre-washed, it is preferable to rinse it before using it to eliminate the residues. An initial opalescence is normal and will rapidly disappear (2-12 hours). To shorten the US opalescence Clarity™ in combination with a mechanical filter (glass wool).