>
News
The expert advice

Why It Is Important to Keep the Toilet Flush Tank Clean

13 November 2025

Interior view of a clean toilet flush tank in a modern bathroom
Interior of a toilet flush tank showing clean internal components and water mechanisms.

Estimated reading time: 4 minutes

Cleaning the toilet flush tank is often overlooked in home maintenance. However, inside the tank, limescale, mineral residue, and invisible deposits gradually build up. Over time, this accumulation can affect how the toilet works and increase water consumption.
Understanding why regular tank cleaning matters helps prevent common issues such as leaks, water waste, and recurring bowl buildup.


Key Points of the Article

  • The flush tank accumulates limescale due to mineral-rich water.
  • Deposits can affect the float, seals, and water flow.
  • A scaled tank increases the risk of hidden leaks and water waste.
  • Limescale from the tank contributes to new deposits in the bowl.
  • Targeted and periodic cleaning keeps the flushing system efficient over time.

Hard Water at Home: A Widespread Issue

In many households, water naturally contains high levels of calcium and magnesium. This condition, known as hard water, encourages limescale formation whenever water sits still or evaporates.

Inside the flush tank:

  • water remains stagnant for many hours
  • mineral salts settle on internal surfaces
  • mechanical components stay constantly in contact with water

As a result, limescale gradually accumulates and may interfere with the proper operation of the system.


What Limescale Can Cause Inside the Flush Tank

Limescale in the tank is not just a cosmetic issue. Mineral deposits can:

  • restrict the correct movement of the float mechanism
  • reduce the sealing efficiency of gaskets
  • alter water flow during flushing

These conditions increase the risk of malfunctions and micro-leaks, which are often difficult to detect at first glance.


Preventing Toilet Water Leaks

Modern toilet in bathroom with visible flush tank system
Modern bathroom toilet with flush tank system designed for efficient water flow.

A tank affected by limescale may cause continuous water loss, even when the toilet is not in use. In many situations:

  • water flows slowly into the bowl
  • the float does not close properly
  • the tank refills more often than necessary

Regular tank cleaning helps maintain mechanical efficiency and reduces the risk of unintended water leakage.


Reducing Water Waste

Silent toilet leaks are one of the main causes of domestic water waste. Even a small, constant flow can result in:

  • hundreds of liters wasted each month
  • higher overall consumption
  • increased water bills

A clean flush tank, free from mineral buildup, supports optimal flushing performance and helps prevent unnecessary waste.


Keeping the Toilet Cleaner Over Time

Limescale that forms inside the tank can be carried into the bowl with every flush. This process encourages:

  • new mineral deposits
  • persistent staining
  • more difficult routine cleaning

Maintaining the tank reduces the amount of limescale entering the bowl. Consequently, regular cleaning becomes easier and less frequent.


The Solution: How to Clean the Flush Tank Properly

To keep the toilet flush tank working efficiently, it is not enough to clean only the bowl. In areas with hard water, targeted cleaning inside the tank is recommended, since mineral deposits develop gradually and often remain unseen.

Proper cleaning involves using a toilet-specific descaling product that dissolves mineral buildup without dismantling internal components. In this context, DISINKROSTO WC® can be used with different application methods depending on the level of scaling.

Deep Cleaning of the Flush Tank

When visible deposits or functional issues are present:

  • empty the tank completely
  • apply the product to the internal surfaces
  • allow sufficient contact time for descaling
  • reactivate the flush to remove dissolved residue

This approach removes layered mineral buildup that may affect seals and mechanical movement.

Periodic Maintenance Cleaning

In areas with particularly hard water, periodic maintenance should complement deep cleaning. A light and controlled intervention every 15–30 days helps:

  • limit the formation of new deposits
  • maintain internal component efficiency
  • reduce the risk of leaks and water waste

Consistent and proper use keeps the tank cleaner over time without invasive maintenance.

  • Pour approximately 50 ml of DISINKROSTO WC® into the tank, even when full.
  • Repeat the treatment every 15–30 days, depending on water hardness.

Conclusion

Cleaning the toilet flush tank regularly is not just routine maintenance. It is a practical way to save water, prevent mechanical issues, and maintain overall toilet efficiency. In areas affected by hard water, targeted tank descaling provides an effective preventive solution.


Still Have Questions?

The Marbec technical support team can guide you in choosing the correct procedure and the most suitable products for maintaining both the toilet bowl and the flush tank. You will receive advice tailored to your specific situation.
👉 Contact Marbec for qualified technical support.

Article's Products
  • DISINKROSTO WC®

    Acid-based gel descaler specifically formulated to remove stubborn limescale in the toilet. It clings to internal surfaces, works effectively under the rim, and helps restore hygiene and cleanliness.

    + Varianti

    8.67€

6 February 2026 SOS Oven and BBQ: How to Remove Stubborn Build-Up and Burnt-On Residue
When you use your oven or barbecue regularly, burnt grease, carbon residue, soot and black crusts can quickly build up on internal surfaces. This type of dirt is not the same as everyday kitchen grime. Instead, it forms because of high temperatures, bonds strongly to the surface and becomes harder to remove over time. In these situations, generic cleaners and DIY solutions are often ineffective. Worse still, they may lead to overly aggressive scrubbing that damages surfaces. That is why it is important to understand how this dirt forms and how to treat it properly. With the right approach, cleaning becomes easier and surfaces stay in better condition for longer.
28 January 2026 Metal Cookware and Kitchen Tools: How to Clean Them Based on the Material
Cleaning metal pots and utensils correctly is a daily task for anyone who cooks at home and uses tools that come into contact with food, heat and water. Stainless steel with streaks, darkened copper, silver that loses its shine or dull brass are common issues. In most cases, these problems are not caused by dirt, but by using cleaning methods that are not suitable for the specific type of metal. In this article, you will find practical advice on how to clean cookware and kitchen tools made of copper, stainless steel, silver, brass and chrome-plated surfaces. You will also learn which DIY metal cleaning methods really work at home, how to use them correctly and when it is more effective to rely on specific metal cleaning and polishing products to achieve more even and long-lasting results.
26 January 2026 How to Clean a Stainless Steel Kitchen Sink: A Practical Guide
The kitchen sink is one of the surfaces that gets dirty most easily at home. Water left to dry on its own, food residues, grease and unsuitable cleaners can all leave streaks, stains and a dull finish on stainless steel, even when the sink is cleaned regularly. Sometimes it takes very little for the surface to lose its shine and show marks that are hard to remove with a quick wipe. Cleaning a stainless steel kitchen sink properly is not just about removing visible dirt. It also means treating the surface correctly and avoiding common mistakes that can worsen its appearance over time. Along with daily cleaning, it is therefore important to know how to polish a stainless steel sink, so it stays bright, even-looking and easier to maintain in the long term. In this guide you will find practical, easy-to-apply solutions for home use, from commonly used DIY remedies to the use of a specific product such as CREAM INOX®, recommended when you want a more uniform, brighter and longer-lasting result on your kitchen sink.