Nisso Egg-laying box DX (L)

Protect spawns and raise healthy fry with the Nisso Egg‑Laying Box DX (L), a hang‑on external breeding box designed to keep water quality consistent with the main aquarium. By drawing and returning tank water, it maintains temperature and chemistry stability—key factors for strong hatch rates and fry survival. The shower‑type inlet creates a soft, even flow that won’t disturb eggs or delicate fry, while improving oxygenation and preventing dead spots where waste can accumulate.

The secure lid reduces stress and jump risk, and the clear body makes monitoring effortless. Use it to isolate egg‑laying pairs during spawning, safeguard eggs from predation, rear fry to a safer size, or acclimate sensitive juveniles. Installation is quick and tool‑free on most rimmed or rimless tanks, and routine cleaning is simple thanks to the accessible layout. For breeders and hobbyists alike, this external box offers reliable results without the cost and complexity of a second heated aquarium.

Use cases

• Isolate egg‑laying fish during spawning, then separate adults to prevent egg loss.

• Hatch and rear fry with stable, shared tank conditions while protecting them from predators.

• Quarantine or acclimate small/sensitive fish with continuous main‑tank water exchange.

What’s included

• Nisso Egg‑Laying Box DX (L) with lid

• Inlet/outlet components for hang‑on installation

• Gentle shower pipe assembly

Specifications

• Size: Large (DX L) external breeder box

• Placement: Hang‑on outside the aquarium

• Flow: Gentle shower‑style inflow; uses circulating tank water

• Suitable for: Egg‑laying species, livebearers, small fry, isolation/acclimation