What Are Springtails?

Springtails (Collembola) are among the smallest and most important members of the bioactive hobby. These tiny arthropods — typically 1–3 mm long — consume mold, fungi, decaying plant matter, and waste, keeping enclosed ecosystems clean and balanced.

What Do Springtails Look Like?

Springtails get their name from a forked appendage (furcula) on their underside that acts like a spring, launching them away from danger. Most species used in the hobby are white or gray and barely visible to the naked eye unless you look closely at moist substrate.

Why Are They Important?

In a closed terrarium or vivarium, organic matter accumulates — fallen leaves, shed skin, uneaten food, and animal waste. Without decomposers, this material breaks down slowly and promotes harmful mold and bacterial growth.

Springtails accelerate decomposition by consuming this material and converting it into nutrients that plants and other organisms can use. They're the first line of defense against mold in bioactive setups.

Springtails vs. Isopods

Both are cleanup crew members, but they serve different roles:

| | Springtails | Isopods | |---|---|---| | Size | 1–3 mm | 3–20+ mm | | Primary diet | Mold, fungi, micro-debris | Leaf litter, decaying matter, waste | | Habitat | Surface and top substrate layers | Throughout substrate depth | | Reproduction speed | Very fast | Moderate |

Most bioactive setups benefit from both. They complement each other rather than compete.

Common Species in the Hobby

• Folsomia candida — Temperate white; the most popular starter species
• Sinella curviseta — Tropical white; prefers warmer, more humid conditions
• Entomobrya — Various colors; more specialized requirements

For most keepers, F. candida is the best starting point due to its hardiness and fast reproduction.

Getting Started

You'll need:

1. A starter culture (available from Insect Depot)
2. A small culture container with ventilated lid
3. Moist substrate (coconut fiber or sphagnum moss)
4. Springtail food or active dry yeast

Maintain moisture, feed sparingly, and your culture will grow steadily. Once established, you can introduce portions into any bioactive terrarium or vivarium.

Frequently Asked Questions

Are springtails insects? They're hexapods — closely related to insects but in their own order (Collembola).

Will springtails escape? They may climb container walls but rarely survive long outside moist environments. Ventilated lids prevent buildup while keeping most springtails contained.

Do they bite or sting? No. Springtails are harmless to humans and pets.

Can I keep springtails without isopods? Yes. Springtails alone provide significant mold control, though combining both is ideal for complete bioactivity.