Quick Summary
Zoo Med HydroBalls is an expanded clay terrarium substrate in a 1.13 kg pack. It is described for use in naturalistic terrariums and for applications such as humidity support, plant landscaping, waterfall flow and filtration.
The main buying checks are the pack size and whether this substrate matches the setup you plan to build. It is a substrate material rather than a complete habitat system, so the rest of the arrangement will depend on the terrarium, plants, pump or filtration setup you are using.
What to Compare Before Buying
- Pack size: This pack contains 1.13 kg. Compare that amount with the area or depth you need to cover.
- Intended use: It is described for terrarium substrate, plant landscaping, waterfall flow and filtration. Check that your setup needs the same type of material.
- Setup requirements: Some uses mention mesh, a pump or water flow. Confirm that your planned arrangement includes the supporting items you need.
- Humidity needs: If you want to support tropical species, compare the substrate with the rest of your enclosure design.
Before You Decide
Confirm the 1.13 kg pack size suits your enclosure or project. Check whether you need HydroBalls on their own or as part of a setup with mesh, a pump or filtration. If your terrarium needs a different substrate depth or a different supporting system, another option may be a better fit.












