Red Sea Reefer 250/350 Inner Downpipe
Fits
Red Sea Reefer 250 G2, Red Sea Reefer 350 G2
Part no.
R42202G2
Red Sea Reefer 250/350 Inner Downpipe
The genuine inner downpipe for a Red Sea Reefer 250 G2 or 350 G2 overflow — despite the model name on the box, this is the G2-specific part. Red Sea's Reefer overflow uses two pipes: a main downpipe, and this inner downpipe as the silent secondary drain that stops the display overflowing if the main pipe ever gets blocked. This is the genuine G2 replacement (R42202G2).
Key features
- Genuine Red Sea part R42202G2 — the G2-specific inner downpipe, not the older non-G2 version.
- Secondary safety drain — keeps the overflow working if the main downpipe is restricted.
- Direct swap — no cutting or modification on a genuine Reefer 250 G2 or 350 G2.
Specifications
| Manufacturer part number | R42202G2 |
|---|---|
| Component | Inner downpipe (secondary/emergency drain) |
| SKU | RED524b |
Will it fit my tank?
This part fits the Reefer 250 G2 and Reefer 350 G2 only — it is not interchangeable with the original (pre-G2) Reefer 250 or 350, which use a different, non-suffixed part (42202), or with the larger Reefer 450, 425XL, 525XL or MAX-E, which use a different part again (R42203). The "250/350" in this listing's name refers to the two G2 sizes sharing this part, not the non-G2 originals.
What it does
Red Sea's overflow box uses a silent-flow main downpipe plus this inner downpipe as a secondary bypass, so if the main downpipe is ever obstructed, water routes through this pipe instead of spilling over the overflow box.
Suitable for, and not suitable for
Suitable as a genuine replacement inner downpipe for a Reefer 250 G2 or 350 G2. Not suitable for non-G2 Reefer tanks, the Reefer XL 200, or the larger Reefer 450/425XL/525XL/MAX-E range.
Care and maintenance
Check this pipe along with the main downpipe if the overflow runs louder than usual or the display level creeps up — it's easy to miss because it normally carries little to no flow.
Goes well with
The matching Reefer 250/350 G2 overflow downpipe and return pipe, if servicing the whole assembly.
Warranty and delivery
Covered by your consumer guarantee rights under Australian Consumer Law. Standard parcel delivery.
Common questions
Why doesn't the product name say "G2" if this part is G2-specific?
The part number itself (R42202G2) confirms it's the G2 version. If your tank is an original, pre-G2 Reefer 250 or 350, you need part 42202 instead.
What does the inner downpipe actually do?
It's a safety backup. If the main downpipe gets blocked, this pipe keeps water draining to the sump so the display doesn't overflow.
Does this fit the new Reefer G3?
We can't confirm that from Red Sea's published information — check with us before ordering if you have a G3 tank.
