Fluval Breeding Box 0.3 Gallon (Hang-On External Nursery Box)
The Fluval Breeding Box (0.3 gal) is a compact, hang-on external nursery designed to safely separate fry, eggs, or injured fish from the main aquarium. By using your tank’s existing heater and filtration, the breeder box provides a stable growing environment while keeping small or vulnerable fish safe.
Perfect for livebearers, shrimp, bettas, egg-scatterers, or temporarily isolating fish, this breeder box is a must-have tool for hobbyists and breeders.
Key Features
🍼 Safe Space for Fry Protect newborns from adult fish
💧 Uses Tank Water Flow Maintains stable temperature & water quality
🔧 Easy Hang-On Design Fits most rimmed & rimless tanks
Great for Shrimp & Small Species Gentle flow, safe environment
🔒 Also Works as a Quarantine/Isolation Box
Includes Divider Options Raise multiple fry batches
📏 Specifications
- Capacity: 0.3 Gallon
- Placement: External hang-on design
- Flow: Powered by air pump (not included)
- Compatible With: Most standard aquariums
❓ FAQ
Q: Do I need a separate heater?
A: No — the box uses your main aquarium’s heated water, keeping fry at stable temperatures.
Q: Can I raise shrimp in this box?
A: Absolutely — it’s perfect for baby shrimp and safe isolation.
Q: Does it require an air pump?
A: Yes, a small air pump is needed to circulate water from the main tank.
Q: Is it good for betta fry?
A: Yes — gentle flow and stable temps make it excellent for betta breeders.
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