Oil Tank Water Removal Sponge

including VAT & FREE delivery to the UK

The Water Removal Sponge contains a unique polymer that absorbs up to 1 litre of water (but not oil) and is supplied with a recovery string for easy retrieval when dipped in your oil tank.


Removing the water in your tank will help maintain the quality of your fuel and enable your system to run cleaner and more efficiently, giving you the peace of mind that your fuel will work to its maximum capability.


Water build-up or condensation naturally happens in all oil tanks because of the constant atmospheric temperature changes and can cause a number of problems within the oil tank and the boiler.

The Tank Sponge is weighted so that it lays flat on the bottom of your tank and when the tank sponge is full it should be removed and replaced with a new sponge.

How does water build up in your oil tank?

It’s natural that water will enter your oil tank. It’s a common problem, often caused by the condensation within the tank itself which then begins to settle. This creates a bottom layer of water. Here are a few other ways water can enter your tank:

  • There’s a small leak in your tank
  • Water accidentally entered the tank when the cap was off. E.g. if it was raining when your tank was filled
  • Leaving the tank filler cap open where added moisture in the air can build-up


The problem with water in your heating oil tank

Here are some negative side effects of water in your tank:

  • The likelihood of rust within the metal tank is far greater. This can damage your tank.
  • If the water layer were to freeze inside the tank then the fuel can degrade. This can also block the flow of the heating it produces.
  • A growing increase of bacteria and sludge
  • Water could be passed through the heating system instead of the heating oil, thus causing damage to your boiler.


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