Black pebble

Black pebble is sold in 1 lb and 5 lb bags. The stone is washed and screened at the yard. Actual size measurements will appear here after the supplied batch is checked. Until then, the page does not promise a particular pebble diameter or a match to a fish's mouth size.

A pebble's appearance and its chemistry are separate questions. Rounded shape describes the outside; mineral composition determines what can dissolve into water. A light or dark color is not a reliable shortcut for deciding whether a stone affects hardness or alkalinity. Mixed pebble also needs representative sampling rather than a single attractive piece chosen from the bag.

Finish confirmation is pending. We make no claim that this material is undyed, unpolished, unwaxed, or unoiled until the store records that information. A negative vinegar observation is not a certificate of chemical inertness. Habitat recommendations and chemistry-specific copy are withheld while those facts are unresolved.

Think about access for cleaning as well as the first arrangement. Gaps between larger pebbles can collect material that you will need to remove. Keep stacks stable, avoid sharp or damaged pieces, and leave equipment intakes accessible. For animals that mouth or swallow substrate, match the actual material to species-specific care guidance. A generic label cannot settle that choice.

Rinse the stone before use to remove loose fines from handling. The wet and dry views are representative illustrations, not photographs of a specific batch. Choose weight from the bag selector and use the box plan in the cart to understand the shipping charge. The substrate calculator uses an estimated bulk density and cannot certify animal compatibility.