Zoo Med HydroBalls Expanded Clay Terrarium Substrate Brown 2.5-lb

The Zoo Med HydroBalls Expanded Clay Terrarium Substrate is an innovative base layer substrate made of lightweight expanded clay pellets, designed to create an underground water table in terrariums. This unique substrate allows the bottom layer of your reptile’s enclosure to hold water, effectively increasing humidity levels essential for tropical species. Its porous nature makes it an excellent medium for live plant root growth, supporting naturalistic terrarium environments and bioactive setups. HydroBalls also serve as a filtration medium for waterfall features in terrariums, enhancing habitat aesthetics.

Pet owners looking for quality Zoo Med Clay Terrarium Substrate or browsing reptile bedding options will find HydroBalls a versatile substrate base that maintains moisture without sogginess. It improves terrarium air circulation, reducing risks of mold and stagnant water problems while fostering a healthier microclimate for reptiles and amphibians. The pellets’ inert clay composition means they do not decompose or alter water chemistry, providing a stable foundation.

Made from natural expanded clay, HydroBalls are durable and reusable. Their round shape and uniform size facilitate drainage and water movement, helping prevent root rot and waterlogging in planted enclosures. This sustainable product simplifies terrarium maintenance and helps replicate natural subterranean moisture reservoirs.

• Avoid ingestion by pets as it is non-edible
• Store in a dry area to prevent accidental mold
• Rinse thoroughly before use to reduce dust
• Avoid inhaling dust during handling
• Replace if pellets degrade or crumble excessively

• Spread HydroBalls as a base layer underneath other substrates
• Add water to create an underground moisture reservoir
• Use under soil or sand layers within the terrarium
• Rinse pellets before use to remove dust
• Clean and reuse pellets after substrate changes