Red Sea Sump Modification Kit
Fits
Red Sea REEFER G1 sumps
Part no.
R35475
Pack quantity
1 kit
Genuine part
Yes, genuine Red Sea
Not needed for
REEFER G2 and G2+
Red Sea Sump Modification Kit
The tool for opening an older Reefer sump to fit a ReefMat. The Red Sea Sump Modification Kit is a specialty silicone-cutting kit for converting an older-generation REEFER sump so it accepts a ReefMat automatic fleece-roller filter. REEFER G2 and G2+ sumps are already ReefMat-ready from the factory and don't need this kit.
Specifications
| Field | Detail |
|---|---|
| Fits / for use on | Older-generation (pre-G2) REEFER sumps being retrofitted with a ReefMat 250, 500 or 1200 |
| Not needed for | REEFER G2 and G2+ sumps (ReefMat-ready from the factory) |
| What it includes | 1x utility blade handle with snap-off blades, 2x 0.1mm blades, 2x 0.15mm blades, 1x blade storage case, 1x small glass scraper |
| Fitting difficulty | No draining or sump removal required – the sump is modified in place |
| SKU | RED198 |
| Manufacturer part number | R35475 |
Key features
- Purpose-built for silicone removal – cuts through the thin silicone joints holding internal sump baffles and fittings, without the gouging a standard utility knife causes.
- No draining required – Red Sea's own installation guidance describes modifying the sump in place, without removing it from the cabinet.
- Matched to the retrofit – sized for the tight joints inside a sump rather than general workshop cutting.
Will it fit my tank?
This kit is for older-generation REEFER sumps being retrofitted with a ReefMat – it is not needed on REEFER G2 or G2+ systems, which ship ReefMat-ready with no cutting required. Which older sumps need which modification varies by tank size and generation, and Red Sea publishes the specific steps (which internal walls, sock holders or dividers to remove) against your tank's serial number. Check that guidance for your exact model before cutting – the modification is permanent.
Suitable for, and not suitable for
Suited to owners of an older REEFER sump adding a ReefMat 250, 500 or 1200 fleece roller. Not needed on a G2 or G2+ REEFER, and not a general-purpose cutting tool for other tank modifications.
Warranty and delivery
Covered by Red Sea's manufacturer warranty, in addition to your consumer guarantee rights under Australian Consumer Law. Ships as a small parcel item.
Common questions
Do I need this kit for a G2 or G2+ Reefer?
No. Red Sea builds G2 and G2+ sumps ReefMat-ready – this kit is only for older-generation sumps that predate that change.
Will this damage my sump if I get it wrong?
The cut is permanent, so confirm the exact modification steps for your tank's serial number and generation before starting – Red Sea's installation guide sets out what to remove model by model.
Does it come with instructions?
The kit provides the cutting tools; follow Red Sea's published ReefMat installation guide for the step-by-step process for your specific sump.
