NT Labs
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From £9.49


Sludge Remover

When to use:

Use when there is a build-up of sludge on the bottom of the pond, use after addition of algae and blanket weed treatments.  Sludgeclear is a blend of enzymes and bacteria designed to digest organic material leading to a cleaner pond and filter with fewer opportunities for disease-causing organisms to hide.  Sludgeclear supports and encourages the activity of the biological filter bacteria. 


  • Shake bottle well.
  • Mix the correct dose in a clean bucket of pond water, then pour evenly around the pond.
  • Use Sludgeclear regularly during the pond season to help keep your filter and pond clean.    


Available in the following variations:

250ml, 500ml & 1 Litre

Stockist Finder

Simplified map of the United Kingdom.

Find your nearest NT Labs Authorised Retailer.


Let us calculate your dosage for you!

To make the process of using our products even easier this handy dosage calculator tells you the amount you will need to put into your system. Please ensure you also read the instructions and warnings that are written on the bottle/pack label.

I know my system's measurements and want to:

Calculate my volume
Dosage calculator

Calculate dosage

You’ll require*
0 ml

* Always follow the instructions on the label. This calculator is intended to be used only as a guide to how much product you need to buy to treat your system. It does not take account of displacement caused by gravel, rocks and ornaments etc and does not include the volume of any external filtration system. NT Laboratories Ltd. will not accept any responsibility for inaccuracies or misuse of this guide.