Add-ons

Finish your setup. Softeners for hard water, a dual tap for filtered water at the sink, inline filters to upgrade a twin system, and the parts to connect your ioniser.

PreFilters Kitchen Water Softener
WaterMark certified

Kitchen Water Softener

$295

Fits inline on your kitchen water line. Made for hard water over 80 mg/L, it changes how hardness minerals behave so they stay suspended instead of sticking.

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PreFilters Shower Water Softener
WaterMark certified

Shower Water Softener

$245

Screws in between your shower arm and showerhead, or between the wall outlet and a handheld hose. Installs in minutes with no plumber and no tools.

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Dual-function kitchen filter tap
WaterMark certified
Save $50 in a bundle

Dual Filter Tap

$350

Your kitchen mixer and a cold-only filter tap in one, in Brushed Nickel. Fits a single tap hole and connects with standard 1/4″ tubing.

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Inline Fluoride Filter add-on
Twin systems or stand-alone

Inline Fluoride Filter

$160

A compact external fluoride filter. Add it to a twin system, or use it on its own. Ideal for caravans and RVs.

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Inline UltraFilter add-on
Twin systems or stand-alone

Inline UltraFilter

$55

An external 0.01 micron ultrafiltration cartridge. Add it to a twin system, such as between a Twin Above Sink housing and your ioniser hose, or use it on its own.

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H2 Inline Booster Kit
For twin systems

H2 Inline Booster Kit

From $160

Fits inline after a twin system. Triple systems already include the H2 Booster cartridge in stage 3. Both kits use the same booster; only the fittings differ.

Choose your system
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Ioniser hose compression fitting for K8 hose
Above sink systems only

Ioniser Hose Compression Fitting

$10

Connects your ioniser’s inlet hose to a PreFilters above sink system.

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Do you need a softener?

Softeners are for hard water. If your water isn’t hard, you don’t need one, and we won’t recommend one.

Hardness guide

Hardness as CaCO₃ mg/L.

Under 60: soft

60–80: moderate

Over 80: hard

Over 80 mg/L, a Kitchen Water Softener is recommended, and it’s essential if you run an ioniser.

Questions

No. A softener changes how hardness minerals behave so they stay suspended instead of sticking as scale. It doesn’t filter anything, so it works alongside your PreFilters system, not instead of it.

No. The calcium and magnesium stay in your water. The softener just makes them less likely to build up as scale.

If your water hardness is over 80 mg/L, yes. Scale on the plates is the most common reason ioniser performance drops, and the Kitchen Water Softener means slower scaling.

It screws in between your shower arm and showerhead, or between the wall outlet and a handheld hose. It takes minutes, with no plumber and no tools.

Yes. It suits homes, rentals and caravans.

Yes. Add the dual tap to any under sink system as a bundle and save $50.

Not sure what you need?

Take the two-minute water quiz and we’ll tell you which add-ons suit your water, and which ones don’t.

Water softeners reduce the effects of hard water and slow scaling. They do not filter water.