Hydroballs 2.5 Lbs.

Here’s everything you need to know about Zoo Med HydroBalls™ — the lightweight expanded-clay substrate that’s perfect for bioactive terrariums and vivariums:

What Are HydroBalls?

Zoo Med HydroBalls are expanded clay pebbles designed primarily for horticulture and terrarium drainage. They retain moisture while allowing excellent water flow.

Primary Benefits

• Creates a Water Table (Aquifer)
  By filling the aquarium base with HydroBalls and adding water, you establish a natural underground reservoir that helps raise and stabilize humidity levels—ideal for tropical and rainforest setups.

• Enhances Plant Root Growth
  Healthy for living plants, they prevent waterlogging and provide steady moisture to roots.

• Useful in Filtration Features
  Can be used in terrarium waterfalls or internal filters to increase water circulation and clarity.

• One of the best products used as a drainage layer