• Ben Loy

Siliphos home water softener and descaler (Siliphos water treatment)

Why I use Siliphos (Polyphosphates) as a home water softener and descaler.

We use a lot of water. We often forget how much.

Water is used for drinking, cooking, personal hygiene, house cleaning, watering the garden, and more.

The water is traveling in the plumbing system of your house and can take a toll on the water system.

Just before We dive in for further information, let's see the benefits of water softening and why I use a Siliphos (polyphosphates) home water softener.

[Update]: Recently I was thinking about the added polyphosphates I have in the system I mention below. I decided to remove the device and the added polyphosphates, at least from the potable water section of the waterline. I can not redirect you to a source that explains why I decided to do so, it is a matter of gut feeling since I am not a professional chemist or have any special knowledge of water regulations and what should or should not be added to potable water.

I do still use the water softening system to maintain the lines that go around the house for the water heater, washing machine, bathrooms, etc. I still think this is a good product for preventing scale and softening water, I just do not want to drink it in the meanwhile.

I will let you know once I have new resources and I know better.

The benefits of Siliphos home water softening system

Water softening is very common in many areas of our daily lives. If you recently visited a hotel, restaurant, airport, or any public building, it is most likely that you used softened water either by eating, drinking, taking a shower, and more.

In your house, water is probably used in many ways from cooking to cleaning.

All those water runs in pipes, part of the plumbing system.

Polyphosphates water treatment and water softening, in general, are gaining more interest over the years. People are more aware of the topic and the benefits of water softeners.

Take this chart for example - this is the interest in the US in the last 5 years.

So why bother softening your water?

Scale formation in pipes is a natural process. Almost inevitable.

Water may contain calcium and magnesium salts. Those sediments have a bad effect on the pipes in your house. Siliphos significantly prevent that effect, keeping the pipes cleaner.

Anti-scaling water treatment helps to prevent scale in water, prolonging the life of the pipe and metal plumbing systems.

Clean pipes mean:

  • Less corrosion in your home plumbing and fixtures.

  • Less "brown" or even "red" water coming out of the pipes.

  • It will significantly eliminate the scaling of the pipes. Scaling occurs due to the calcium and magnesium deposition onto metallic surfaces of the inner plumbing pipes.

  • Help save energy - Calcium tends to deposit on the heating coils of many households appliances (water boiler, washing machine, and more). Once the hit transfer is blocked by the deposit, the heating coils will work harder to warm the water. It will consume more electricity.

  • Extend the life of household appliances, especially their heating coils if any.

  • And my favorite result - reduce the costs of plumbing repairs due to potential leaks and bursts in pipes.

The above phenomenon is quite common in pipes and plumbing. That takes its toll on the pipes. The costs of repairs can be huge.

To conclude so far

The benefits of using Siliphos water treatment are clear. Fewer repairs cost in the long run, fewer cases of brown water.

Siliphos is used with a Siliphos dispenser(paid link) (like inline water filter) with a changeable inner filter with Siliphos(paid link).

Not convinced yet? Keep reading to find out more.

What is Siliphos?

Siliphos is a reliable and economic water softening system for potable and industrial water. It is recognizable by its glass-like spheres. Siliphos are made of Polyphosphates.

Here are an image with scale, Inches (bottom), and centimeters(top):

Siliphos spheres can be used in dispensers of many sizes, installed inline. Siliphos prevent scale deposition and stops corrosion of the inner pipe.

Because of its silicate and phosphate content, Siliphos also inhibits rust formation in pipes by forming a gaunt protective layer on the inner metal surface. Not much is needed. A Siliphos concentration of 3 ppm is enough to achieve both effects.

In most cases, Siliphos spheres are used via a designated Siliphos dispenser.

If water is not running through the dispenser for periods longer than 3 months, the dispenser should be drained of water.

To conclude so far

Siliphos dispensers are containers for Siliphos spheres and are economical and reliable solutions.

Here is an example of a home water softener. Check out its specs on Amazon. (paid link)

Do I have to use the system as a whole house water softener?

Definitely not.

Though you can enjoy the benefits of polyphosphate water treatment across your house, it is also possible to focus its use on a particular section of your house or garden.

You can also combine 2 systems. For example one for the entire house, like a carbon filter, and a polyphosphate treatment for the laundry room, garage, or garden.

Why 2 systems?

Some people prefer to focus on a certain area, or already have installed a water treatment system for the whole house.

It is really flexible.

How much Siliphos should I put in the polyphosphate water treatment dispenser?

In the first use, fill the Siliphos water softener dispenser all the way to the top.

Every 3 - 6 months, when the level of the Siliphos spheres went down about 1/3 of the way, refill to the top.

Personally, every 12 months or so, I take out all the Siliphos spheres and clean the dispensers' filter container. Just to keep it extra clean. Not a complicated or time-consuming task.

To conclude so far

Maintenance is simple and work-saving.

Important: always follow the manufacturer's instructions first.

Where can I install a Siliphos home water softener?

Well, I installed one on the main water pipeline leading to my house. All the water I use is Siliphos treated.

I basically use it as a whole house polyphosphates water softening.

Here is an image of my installation, it is a bit messy, someone painted the area so paint splatter went all over the place:

But it may not be the case for you so here are some ideas as to where can you install Siliphos water treatment, provided that you have access to the pipeline:

  • Before your garden watering system.

  • Before the service room or basement so washing machine can have softened water.

  • Before your water boiler - that is a great idea, it extends the life of the heating coil and prevents "brown" water.

  • Before your kitchen faucet. Prevents rust and sediments from clogging the water outlet.

Basically, where ever you want a scale and rust-free water.

To conclude so far

You do not have to install the Siliphos dispenser on the main home pipeline. You can focus on a particular place or water pipeline in your home, provided that you have access to the pipes.

A good example: place the Siliphos dispenser on the junction where water travel to a second floor or a basement. This "divide and conquer" method reduces the usage of the product if not needed in a particular part of the house.

Important: always follow the manufacturer's instructions.

Will polyphosphate water treatment clean the water from sediments and debris?


It can reduce the rusting inside the waterline, increasing the water quality. But if the water contains a lot of debris, like well water, polyphosphate treatment will not remove it away.

The common solution for removing debris and dirt out of water is using cartridges type filters that:

A. filter the dirt out, usually a type of dense polypropylene cartridge(paid link).

B. Absorb other things away from the water. Mostly with active carbon cartridge(paid link).

Those cartridges usually go inside Housing Filter System such as this one.

Will polyphosphate water treatment clean the water from chlorine and other contaminants?


Siliphos water treatment is sometimes mistakenly referred to as Siliphos water filter.

Siliphos will not filter your water like reverse osmosis under sink filters or like an activated carbon filter.

The Siliphos "ties up" to the minerals in the water that create the sediments and scale and prevents them from sticking to the metal.

Personally, I use another set of filters from my drinking and cooking water. Regardless of the Siliphos. They both work great together.

To conclude so far

Siliphos is not a filtering system. It has many other benefits, it prevents scale and rust partials build-up in pipes and travel in water. If you want to also filter your drinking water, you can integrate the system with a reverse osmosis filtering system(paid link). They work great together.

Will Siliphos change the taste of the water or coffee I drink?


Your coffee, tea, or just plain water will have the same taste. Some people say that Siliphos water treatment made their water taste even better.

Since the polyphosphates water treatment will inhibit and reduce scale in water by attaching to the inner part of plumbing, it may reduce also the metallic taste from potable water.

I personally didn't feel any difference.

Taste is subjective, I leave it here.

If you still have doubts, it is fine. As I mentioned above, you do not have to install it as a whole house water softener.

Since installation is pretty easy, you can install the system on any part of the pipeline in your house, provided that you have access.

I recommend installing before the washing machine and water heater.

I have an old rusty and scale deposited plumbing. Will Siliphos clean it?

Siliphos treatment will be able to remove some of the oxidized iron from within the pipe and reduce scale in water.

It will not remove calcium deposits.

I would not consider Siliphos as a "cure" for a poorly maintained pipeline. It can, however, improve the condition to some extent by removing some of the oxidized iron from the pipes.

Like any maintenance guideline, actions are best taken ahead of time to prevent issues otherwise expensive or time-consuming to fix.

Generally, a polyphosphate water softener can be beneficial even for old pipelines but it is better as a prevention method rather than restoring method.

Hard water softener for washing machine

As I briefly mentioned above, water softeners are highly effective when it comes to extending the life of your washing machine. Polyphosphates water softening systems are ideal for that task.

Here is why:

Your washing machine can use 14 to 25 gallons (53 to 95 Liters) per load. May change due to machine capacity, temperature, etc.

The is a lot of water running through the system.

This water contains scale and other materials that can accumulate on the heating element of the machine but not only.

Softening this water will prevent that scale from building up.

That will reduce maintenance costs and inconvenience.

So, what to do:

You can install the water softener strategically, before the washing machine inlet pipe. This way, all the water reaching your machine is treated.

If your washing machine is located in a service area, add the water softener on the water pipe leading to that area. That way you can protect multiple appliances like water heaters and more.

To Conclude

Scale formation in pipes, over time, will damage the pipes and the quality of water.

Hard water scale prevention is one way to increase the lifespan of plumbing systems, water heater-based products, and prevent nasty cases of "brown" water.

Siliphos water treatment is a great solution for keeping your house plumbing clean and prolong its life by reducing scale in water (scale inhibitor).

Like with similar other polyphosphate water treatment systems, Siliphos dispensers are easy to maintain and install.

A common way to use Siliphos water treatment is by Siliphos spheres, placed into a Siliphos dispenser.

The system can be installed in various locations in the home plumbing system (whole house water softener), making it a more area-specific solution if desired.


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