Replacement Dechlorinator Cartridges
Replacement Dechlorinator Cartridges
Sediment, GAC, CTO and specialist KDF media in 10-inch and 20-inch sizes
Match the physical size and filtration stage to the existing purifier. Prime every new cartridge, check for leaks and test the treated outlet water before pond use.
Our practical advice: check compatibility, realistic flow and ongoing replacement cost before ordering. If you are unsure, send us the current housing or model details and we will help you match the correct product.
Replacement media is where an inline purifier either continues doing its job or quietly becomes an empty housing. Match the cartridge length and treatment stage exactly, keep a written installation date and test the outlet instead of relying only on appearance or unrestricted flow.
The Burtons units use PRE, GAC and CTO as their standard three-stage sequence. KDF is a specialist alternative rather than an automatic fourth stage, so its position and suitability should be confirmed for the source water and housing.
Price range: £25.00 through £37.95 (inc VAT)
Price range: £9.95 through £16.90 (inc VAT)
Price range: £9.95 through £16.90 (inc VAT)
Price range: £4.90 through £9.95 (inc VAT)
Choosing and Replacing Dechlorinator Media
Match both length and treatment stage
Choose the 5 micron PRE cartridge to protect the carbon stages from sediment, the GAC cartridge for granular activated-carbon contact, and the CTO carbon block as the polishing stage. Each is offered in 10 inch and 20 inch sizes; the two lengths are not interchangeable.
KDF is a specialist option
The Burtons KDF cartridges are listed separately because they are not the standard cartridge supplied in the normal three-stage set. Confirm the intended stage and water-treatment requirement before substituting KDF for PRE, GAC or CTO.
Replacing loose carbon and other media
Some cylinder purifiers use loose replacement activated carbon rather than drop-in cartridges. Follow the purifier instructions for media grade, fill quantity, flushing and disposal; a nominally similar carbon may have different flow and adsorption behaviour.
A clean housing is part of the service
Isolate water, release pressure, clean the housings without household detergent, inspect O-rings and refit the stages in the correct order. Restore water slowly, check for leaks and flush to waste before testing the outlet and returning it to the pond.
Choosing Replacement Dechlorinator Cartridges
Match the physical size and filtration stage to the existing purifier. Prime every new cartridge, check for leaks and test the treated outlet water before pond use.
Frequently Asked Questions
How do I identify my cartridge size?
Measure the old cartridge and check the purifier model. Choose 10-inch or 20-inch exactly; the lengths are not interchangeable.
What is the normal stage order?
The standard Burtons three-stage arrangement is sediment PRE, GAC and CTO carbon block. Follow the labels and the current manufacturer instructions.
What does the PRE stage protect?
It catches dirt and sediment that would otherwise block or contaminate the carbon stages.
What does the GAC stage do?
Granular activated carbon adsorbs chlorine, chloramine and organic impurities while water passes through the media.
What does the CTO stage do?
The carbon block provides a further polishing stage and fine carbon contact.
Where does KDF fit?
KDF is a specialist option. Confirm the intended stage sequence and water-treatment requirement before substituting it for a standard cartridge.
Should I lubricate the housing seal?
Use only a lubricant approved for potable-water seals and only when the manufacturer permits it.
Why is the housing difficult to open?
It may still be pressurised. Isolate the supply and release pressure fully before using the correct housing spanner.
Can carbon dust harm the pond?
Loose fines are normally flushed away before use. Do not direct the first flush into the pond.
Why has flow fallen after replacement?
Check cartridge seating, stage order, kinked hose, blocked inlet screens and whether the new cartridge has the correct specification.
Can cartridges be cleaned and reused?
Sediment stages may sometimes shed loose surface dirt, but treatment media should be replaced rather than relied upon after exhaustion.
Do unused cartridges expire?
Store them sealed, dry and clean. Follow any date or storage guidance on the packaging.
How should old cartridges be disposed of?
Drain them and follow local household-waste guidance unless contamination or the manufacturer instructions require another route.
Can I mix different brands?
A cartridge may be the same nominal length but differ in diameter, seal, media and flow. Use a confirmed compatible replacement.
Why should I test after replacement?
Testing confirms correct assembly and gives a clean baseline for the new set.
