Phoenix Gravity POSTreat Refill Media

 34,99 inc. IVA

  • Refill Media for Phoenix Gravity POSTreat Fluoride Filters
  • Contains a single refill for a pair of filters
  • Removes 95% of fluoride
  • Activated Alumina Filter Media
  • Filter 4,000 liters before requiring new filter media (+/- or 6 months)

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  • Done Free shipping Portugal & Spain (mainland) from €100
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  • Done Free returns within 30 days
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Phoenix Gravity POSTreat Refill Media

The Phoenix Gravity POSTreat Refill Media allows you to continue to use your POSTreat fluoride filters safely. A refill lasts approximately 4,000 liters (or six months) before requiring new media. You no longer need to throw away your filters. Simply discard your old filter media and refill the filter housing with new media. In this way, we help the environment a little more.

How do I replace the POSTreat Fluoride Media?

We recommend to replace the media after 4.000 liters and/or 6 months of usage.

When it’s time to replace;

  • Simply open them by hand (unscrew by hand the top part) and dispose of the pouches inside.
  • Refill with new pouches (distribute evenly) and screw the top part back onto it.
  • Prime the filter (as instructed in the previous paragraph).
  • Install the filter element back onto the nozzle of the black filter element.
  • Job done!

Or watch this video how to replace your filter media


Active Alumina Pouches

The POSTreat filter elements are filled with active alumina pouches. The pouches contain active alumina granules. Don’t worry if one of the pouches breaks! The outlets of the stainless steel filter casing are lined with a fine mesh. This way, none of the granules can end up in your filtered drinking water!

Is active alumina safe for my health?

In short, yes! How do we get to this answer? First of all, active alumina is not the same as aluminum. Activated alumina is an inert natural resin and in no way harmful and does not add aluminum to your drinking water.

Active Alumina works by adsorption and will therefore adsorp fluoride, arsenic and selenium. It is therefore important that the following two steps are always adhered to;

  1. Always prime or backwash the filter element before installing it. This ensures the activated alumina is washed from any impurities.
  2. Make sure to adhere to the replacement intervals. The filter has a pre-set adsorption surface. Once its capacity is exceed it will no longer filter impurities.

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Filtration Capacity (Liters)


Removes Fluoride



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