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Crystal Poly Salt Free Hard Water Softener Conditioner Gen-5

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Dimensions: 4 in × 4 in × 12.5 in
Weight: 5 lb

Salt-Free, Catalytic hard water treatment is the process of using a catalyst to treat hard water minerals breaking them down into softer aragonite crystals. Aragonite is a much softer form of calcium carbonate which makes it easier to maintain smooth surfaces such as glass and solid surface counters. This particular treatment method uses a multi-metal 3/8” Electro-Mechanical Catalytic Core (Hard Water Bullet) that has channels cast into it causing a turbulent effect as un-treated hard water passes through it.

As water enters the filters housing, it passes through a 25-micronstainless steel filter to ensure sediment and dirt are removed before the hard water treatment begins. Clean filtered water then passes through the polyphosphate capsule which holds 6 oz of food-grade, plant-based polyphosphate crystals, and then through the catalytic core, which is a true "ElectroMechanical Catalytic Core” (Hard Water Bullet) where the calcium carbonate is converted into harmless aragonite which will be sequestered by the polyphosphate dosing.

As the water moves through the core, electrons are naturally added to the water causing the calcium carbonate to break into aragonite crystals. Polyphosphate dosing is the next step as water travels through a 6 oz polyphosphate canister mounted within the filter. The graphic below shows how the catalytic treatment effect untreated calcium carbonate

Our PSC1-5 Crystal Poly Salt-Free Hard Water Softener Conditioner offers true catalytic salt-free water treatment with very little annual maintenance or cost. The polyphosphate cartridge can be purchased complete, or it is re-fillable (See video below), and you can use any quality brand of food-grade polyphosphate.

Salt-based water softeners not only add chloride to your water but will waste about 60 gallons of water when they regenerate. They also need salt or potassium pellets because these systems are actually “Ion Exchange” meaning they will remove the essential minerals from your water and leave you with no calcium, and chloride in your water, (terrible for septic systems). This hard water treatment method is very effective for hardness up to 30 grains per gallon and ideal for both city municipal and well water. An optional 2-micron bacteria and the iron filter is available Click Here. See the below image with the iron cartridge installed

Filter Water Direct specializes in salt-free and chemical-free hard water treatment methods and products ranging from whole house applications, RV, and point-of-use applications.

Our clear housing makes it easy to see the interior components so you will know when its time to service your salt-free water softener, and the filter has a built-in pressure relief located at the top of the housing to allow you to relieve the pressure off of the filter before you unscrew the housing bottom.

This filter comes standard with a wall mounting bracket and housing wrench and full charge of polyphosphate, and 25-micron stainless filter. We also have Crystal Poly Salt Free Water Softener available with a 2 micron Iron Filter






The Poly Salt-Free Water Softener bullet catalytic core has been tested and verified for results by Technion Israel Institute of Technology, Department of Chemistry

Standard Features:

Lifetime Catalytic Electro-Mechanical Core

Assembled in Arkansas (USA)

Extra polyphosphate cartridge (empty) included (Free)  

No wasted water

No salt

No electricity needed

Very compact space-saving design

Durable clear housing allows you to easily view the interior components 

Included housing wrench and wall bracket

6 oz pre-filled polyphosphate canister pre-installed

1” NPT female connections                                                                                        

30 gallons per minute rated



It's advisable to use a good quality Teflon tape and thread compound on all threads

Mount the filter housing vertical.
*The 1” fittings can be bushed down to ¾”, use good quality bushings
*Consider installing a shut-off on both sides of the filter which will minimize the water leaking from pipes when you service the filter.



  • After the first 6 months, remove the housing bottom and interior components and clean the inside of the housing with mild detergent. Never use abrasive cleaners as this will scratch the clear plastic housing
  • Remove the Hard Water Bullet catalytic core and allow it to soak in cleaning vinegar for about 2 hours, clean with a brass wire brush
  • Replace the polyphosphate cartridge (Or disassemble yours and discard any unused crystals and replace with new)
  • Clean the 25-micron stainless screen, use a toothbrush and vinegar to clean thoroughly from inside out 
  • If you use the 2-micron bacteria/Iron prefilter, remove it and replace with new approx every 6 months
  • The average household will get about 10 months between service intervals.

Holly writes;

"Hi, Brad - thank you so much for making these products available! I called you to learn more about your water softener ... you helped evaluate whether it would work for our house (it was a good fit ... 3/4" model). We got it installed and it made a world of difference! my skin is so much softer, no more calcium build upon our pans or water pot. it's amazing ... I'm so glad that I discovered your products ... I've been spreading the word!"

Order replacement parts here:

Polyphosphate Recharge Kit

Bacteria iron Filter

Polyphosphate Cannister including crystals Complete                           

25 Micron Stainless Steel Screen