Safe Separation
Dual compartments with 1mm gaps keep juveniles secure while allowing water to flow freely.
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- 14-day easy returns
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Why customers love it
A Safe Nursery for Your Growing Fry
Give pregnant fish and delicate fry a secure, visible space of their own inside your aquarium with this acrylic breeding isolation box.
- Dual compartments with 1mm gaps keep juveniles secure while allowing water flow
- Floating design lets you place it anywhere in the tank for easy monitoring
- Transparent cover prevents fish from jumping out and includes a feeding hole
- Strong suction cup for secure attachment to the aquarium wall
- Air inlet and outlet improve water circulation and hatchling survival
- Space-saving double-layer structure maximizes tank capacity
Why You'll Love This Breeding Box
Better Water Circulation
Air inlet and outlet improve water circulation and boost hatchling survival rates.
Easy Monitoring
The floating design lets you place it anywhere in the tank for simple observation of your fry.
Jump Protection
A transparent cover prevents fish from jumping out and includes a convenient feeding hole.
Specs
The details that matter
Built to last outdoors, season after season.
- Product Type
- Acrylic Fish Breeding Isolation Box
- Compartments
- Double
- Gap Size
- 1mm
- Material
- Acrylic
- Box Type
- Large size with airflow, Small size with airflow, Large box configuration, Small box configuration
Comparison
Breeding Box vs. Basic Alternatives
Not all products in this category are built the same.
Feature
SmartPicksWorld
Typical alternative
Compartments
Double compartments for separating multiple fish or fry
Often a single open compartment
Gap Size
1mm gaps that keep juveniles secure while allowing water flow
Wider gaps that may let small fry escape
Cover
Transparent cover with feeding hole to prevent jumping
Often no cover, risking fish escaping
Attachment
Strong suction cup for secure wall attachment
May lack reliable mounting options
Water Flow
Air inlet and outlet improve circulation and hatchling survival
Limited or no dedicated water flow features
Our worry-free shopping promise
If your order arrives damaged, defective, or not as described, contact us within 14 days and we will make it right with a replacement or refund.
Frequently asked questions
Everything you might want to know before you order.
How does the 1mm gap size benefit my fry?
The 1mm gaps between the dual compartments keep juvenile fish secure while still allowing water to flow through the box, so fry stay protected without being trapped in stagnant water.
Can I place this breeding box anywhere in my aquarium?
Yes, the floating design lets you position the box anywhere in the tank for easy monitoring, and the strong suction cup also allows secure attachment to the aquarium wall.
How does the cover help protect my fish?
The transparent cover prevents fish from jumping out of the box, and it includes a feeding hole so you can feed the fish without removing the cover.
What materials is this breeding box made from?
This breeding isolation box is made from acrylic, which is clear and durable for aquarium use.
How does the air inlet and outlet improve conditions for hatchlings?
The air inlet and outlet improve water circulation within the box, which helps maintain water quality and increases hatchling survival rates.
Shipping & returns
Shipping
- Delivers to United States (based on your selected country/region).
- Estimated delivery: 3–15 business days after dispatch.
- Shipping cost: Free.
Returns
You can request a return within 14 days after delivery. Standard returns have a €4.00 EUR (approximately $4.66 USD) flat-rate return shipping fee, deducted from your refund. Return shipping is free for items that arrived damaged, defective, or incorrect. Items should be unused and in original packaging where possible. Contact us before sending anything back.