Learning Objectives
By the end of this lesson, learners will be able to:
- Set up safe and effective grow-out tubs for newly metamorphosed dart frogs.
- Maintain the correct humidity, ventilation, and microfauna for froglet stability.
- Provide appropriate feeding, supplementation, and monitoring.
- Prevent common issues such as dehydration, feeding failure, or escape.
- Transition froglets into adult vivariums safely and at the right time.
Lesson Content
Froglets (often called “morphs”) are the most fragile life stage of a dart frog.
They are tiny, inexperienced hunters, easily dehydrated, and prone to rapid decline if conditions are too dry, too wet, too large, or too complex.
A correctly set up grow-out tub is essential for survival.
1. Why Grow-Out Tubs Are Necessary
New froglets:
- dry out quickly
- cannot hunt in large spaces
- cannot climb well
- cannot compete with adults
- struggle to find micro-prey
- lose weight very fast if feeding is inconsistent
Grow-out tubs create a controlled micro-environment where froglets can feed, hydrate, and build strength.
2. The Ideal Grow-Out Tub Setup
Recommended Enclosure Size:
3–6 litres, depending on number of froglets.
Best Containers:
- Sterilite-style plastic tubs
- IKEA SAMLA tubs
- 3D-printed grow-out vivariums (your product fits perfectly here!)
- Small Exo Terra faunariums
3. Substrate Layering
Grow-out tubs don’t need full bioactive substrate, but they DO need microfauna.
Option A: Simple Grow-Out Layer (recommended)
- 1 cm ABG mixture or coco fibre
- generous leaf litter
- a handful of springtails
- a few dwarf isopods (optional but helpful)
Option B: Paper Towel Method (for very tiny froglets)
- ONLY for first 1–2 weeks
- easy to monitor feeding and waste
- change paper daily
- still add springtails for enrichment
Switch to leaf-litter setup once froglets are strong hunters.
4. Hides & Visual Barriers
Essential for reducing stress.
Provide:
- small cork pieces
- clusters of leaf litter
- a little moss
- a bark tunnel or shallow hide
Froglets thrive when they feel hidden.
5. Humidity & Ventilation
Humidity: 85–100%
Ventilation: Moderate (not sealed, not windy)
The goal is:
- permanently damp environment
- no stagnant or dripping-wet surfaces
- stable moisture across the tub
Daily Practice:
- mist lightly 1–2× per day
- leave one corner slightly drier
- ensure condensation is present but not streaming
6. Feeding Froglets
Froglets require tiny prey and frequent feeding.
Primary Foods:
- D. melanogaster fruit flies
- springtails (essential during first 2–3 weeks)
Feeding Frequency:
- Twice daily for the first 10–14 days
- Once daily thereafter
Supplement Schedule:
Same rotation you use:
- Calcium carbonate: every feed
- Repashy Calcium Plus: every second feed
- Vitamin A: once per month
- SuperPig: every two weeks
Tip:
Lightly mist before feeding — this keeps flies slow and froglets confident.
7. Monitoring Froglet Health
Healthy froglets:
- eat aggressively
- remain plump around the waist
- have smooth, hydrated skin
- climb well
- are visible often
Warning signs:
- “skinny frog syndrome”
- dull or dry skin
- lethargy
- hiding constantly
- refusing food
- hopping weakly or uncoordinated
Immediate action:
- increase feeding frequency
- increase springtails
- review humidity
- check temperatures
8. When to Move Froglets Into Adult Vivariums
Move froglets only when they meet all criteria:
✔ Size:
about 1.5–2.0 cm (for Ranitomeya)
or
3+ cm (for Dendrobates/Ameerega)
✔ Behaviour:
- confidently hunting hydei (if applicable)
- bold and exploring
- visible regularly
- strong jump strength
✔ Condition:
- well-fed
- hydration stable
- no signs of SLS
✔ Vivarium readiness:
- stable bioactive cycle
- strong microfauna
- mature plants
- stable humidity and temperature
9. Grouping Froglets
Froglets can be raised in groups:
Best practice:
- 3–5 froglets per small tub
- equal size individuals
- monitor feeding to ensure no one is bullied
Avoid:
- overcrowding
- mixing sizes
- mixing species (ever)
Bullying at this stage is subtle but dangerous.
Key Takeaways
- Froglets are fragile and require controlled grow-out environments.
- Use 3–6 litre tubs with leaf litter, springtails, and moderate ventilation.
- Feed twice daily at first, with tiny feeders and correct supplements.
- High humidity and stable moisture are crucial.
- Only move froglets to adult vivariums once they are strong, bold, and feeding well.
