Fits
Reefer 250 G2, 350 G2
Part no.
R42209G2
Genuine part
Yes, genuine Red Sea
Red Sea Reefer 250/350 G2 Aquarium Overflow Downpipe
The genuine overflow downpipe for a Red Sea Reefer 250 G2 or 350 G2 – not a universal fit. This is Red Sea's own replacement part (R42209G2), the pipe that carries display water down into the sump on the G2 generation of the Reefer 250 and 350. It's a direct swap for a cracked, warped or noisy original.
Key features
- Genuine Red Sea part R42209G2 – factory dimensions and fit, not a generic pipe.
- Restores the quiet overflow design Reefer G2 tanks are built around, once a worn or damaged pipe starts introducing noise.
- Direct swap – no cutting or modification for a genuine Reefer 250 G2 or 350 G2.
Specifications
| Manufacturer part number | R42209G2 |
|---|---|
| Component | Overflow downpipe (display-to-sump) |
| SKU | RED524j |
Will it fit my tank?
This part fits the Reefer 250 G2 and Reefer 350 G2 only. It is not the right part for the original (pre-G2) Reefer 250 or 350, the Reefer XL 200, or other Reefer G2 sizes – the 350/425 G2 uses a different downpipe (R42230G2) and the 525/625 G2 uses another again (R42326G2). If you're not sure which generation your tank is, check the model plate or your original invoice before ordering, since Red Sea has changed this plumbing between generations.
Suitable for, and not suitable for
Suitable as a genuine replacement overflow downpipe for a Reefer 250 G2 or 350 G2. Not suitable for any non-G2 Reefer, or for other G2 tank sizes.
Care and maintenance
A noisy overflow is usually a downpipe problem – check for cracks, mineral build-up or a worn seal before adjusting valves elsewhere in the system.
Goes well with
The matching Reefer 250/350 G2 inner downpipe and return pipe, if you're servicing the whole overflow assembly at once.
Warranty and delivery
Covered by your consumer guarantee rights under Australian Consumer Law. Standard parcel delivery.
Common questions
Is this the same part as the return pipe?
No – this is the overflow downpipe, which carries water down from the display to the sump. The return pipe is a separate part that carries filtered water back up.
Will this fit my original Reefer 250, before the G2?
No. The original Reefer 250/350 uses a different part (R42209, without the G2 suffix). This listing is G2-specific.
What does "G2" mean on my tank?
It's Red Sea's second-generation Reefer design. Plumbing parts are generally not interchangeable between generations, so always match the part to your tank's actual generation.




