Pumice Rock - Peruvian

Product Specifications
1 Pound: One pound of pumice rock. One to two very small rocks. Not enough to do much of anything with.
5 Pounds Smaller Rocks: A good starting point for a 12x12x18 or a 10 gallon tank. 2-3 small rocks to use in a hardscape.

5 Pounds Larger Rocks: A good starting point for a 12x12x18 or a 10 gallon tank. 1-2 larger rocks to use in a hardscape. 

10 Pounds Smaller Rocks: A good starting point for a 18x18x18 or a 20-30 gallon tank. 3-6 small rocks to use in a hardscape. One may be a good bit larger than the others. 

10 Pounds Larger Rocks: A good starting point for a 18x18x18 or a 20-30 gallon tank. 2-4 larger rocks to use in a hardscape. 

10 Pounds Mixed Rocks: A good starting point for a 18x18x18 or a 20-30 gallon tank. 3-5 small / medium / large rocks to use in a hardscape. We try our best for variety here!

20 Pounds Smaller Rocks: A good starting point for a 36x18x18 or a 55+ gallon tank. 6-10 small rocks to use in a hardscape. One or two may be a good bit larger than the others. 

20 Pounds Larger Rocks: A good starting point for a 36x18x18 or a 55+ gallon tank. 3-5 larger rocks to use in a hardscape. 

20 Pounds Mixed Rocks: A good starting point for a 36x18x18 or a 55+ gallon tank. 4-8 small / medium / large rocks to use in a hardscape. We try our best for variety here!

Peruvian Pumice is a lightweight volcanic stone prized in vivarium and terrarium culture for its exceptional porosity, natural appearance, and ability to support healthy bioactive systems. Its highly textured surface provides excellent moisture retention while still allowing strong airflow throughout the substrate and hardscape, making it ideal for tropical enclosures, moss walls, epiphytic planting, and drainage applications.

In planted vivariums, Peruvian pumice helps create stable microclimates that encourage vigorous moss establishment and root development. The porous structure traps moisture and beneficial microorganisms, giving mosses, liverworts, and climbing plants a natural surface to anchor to over time. It also works exceptionally well as a substrate additive to improve aeration and prevent compaction in bioactive mixes.

Peruvian pumice can be used in a variety of ways:

Drainage layers in tropical terrariums and paludariums

Hardscape accents and naturalistic rock features

Mounting surfaces for mosses and epiphytic plants

Aeration additive for bioactive substrates

Humidity-supporting media in plant-focused enclosures

Its natural volcanic texture blends beautifully into rainforest-style builds while remaining lightweight and easy to work with compared to denser stone materials.

Directions for Use: Rinse thoroughly with clean water before use to remove natural volcanic dust and debris. Multiple rinses may be required until the water runs clear. For best results, soak and scrub the stone prior to introducing it into established vivarium systems or aquatic sections of paludariums.