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Filter Bacteria 

Lincolnshire Fish Health

aquaforte filter gel


Activex filtration bacteria contains a mineral rich gel that sticks to all filter media. The minerals in the gel are food for the filter bacteria allowing them to rapidly reproduce and therefore colonise the filter faster. Activex contains all the necessary strains of bacteria that support the parts of the nitrogen cycle that are vital to a healthy pond filter system.

Dose: Introduce 10 ml of Activex per cubic foot of biological filter - there is no need to measure this precisely. Feed Activex into the biological part of the filter not the mechanical area.  In a mature pond use Activex occasionally to boost filter performance particularly and after chemical treatment or heavy feeding. 


In new ponds allow 2 or 3 days between each application of Activex.  In the case of a new pond test the water frequently for ammonia and nitrite – when the filter is mature test regularly to ensure the water is safe for fish.

Available in 250ml, 500ml and 1l

Aqua Balance Sphere

Aqua Balance Spheres are designed to reduce harmful ammonia and nitrite levels quickly and effectively.  Each Sphere is packed full with beneficial, friendly bacteria that will help maintain a clean and healthy pond.

Millions of enzymes in the Sphere will help reduce organics in your pond, resulting in clearer water.

The Sphere starts working as soon as it hits the water.
Can be placed directly in to the pond or the filter.

  • 1 Sphere treats 30000 litres.


Price £14.95

Aqua Balance Balls

Each ball is packed with millions of beneficial bacteria, which will help smooth out Ammonia and Nitrite spikes and keep your pond clean and healthy. The balls will slowly biodegrade as the bacteria is needed. Enzymes in the pond balls will help reduce organics in your pond, resulting in clearer water.

Suitable for any type of filter, ideally places in a mesh bag within the media. Ideal for use after using chemicals, to help (re)start filters and during frequent feeding.

You cannot overdose, this product is totally safe for your pond.

Use monthly to help maintain healthy water.

Available in 2 sizes


Aqua Balance Balls – 500ml Price £10.95

Aqua Balance Balls – 1 Litre Price £18.95










Evolution Aqua - Pure Pond Bomb​


PURE Pond Bomb is a fast acting, concentrated version of the Award Winning PURE POND. PURE Pond Bomb is ideal for use in Koi ponds, ornamental ponds, self contained water features or ponds which do not have conventional filtration, to achieve crystal clear, healthy water.

Inside the PURE Pond Bomb there is a unique combination of friendly bacteria and enzymes, which get to work as soon as the Bomb hits the water to clean up organic waste and break down the ammonia and nitrite, leaving your pond crystal clear and healthy.

One PURE Pond Bomb is effective on ponds up to 20,000 litres. Simply drop the PURE Pond Bomb into your pond filter or directly into the water as and when necessary. The bacteria and enzymes will react to the biological issues with in your pond. You cannot overdose with the PURE Pond Bomb.

When starting up a new filter, simply drop the PURE Pond Bomb into the biological stage of your filter. The high concentration of bacteria will help to remove the harmful ammonia and nitrite, allowing the filter media to mature.

Please note PURE POND BOMB is not intended to clear green water. An appropriate UVC is recommended to clear green water.

High concentration of bacteria and enzymes delivered in one gel-like ball

  • Ideal for emergency use in ponds

  • Quickly restores biological equilibrium

  • Boosts clarity of water

  • Breaks down ammonia and nitrite

  • Cleans up organic waste

  • Works well with or without conventional filters

Price £14.95











Evolution Aqua - Pure Pond Balls​


PURE POND are biodegradable balls, crammed full of live bacteria and enzymes that when added to your pond filter get to work breaking down Ammonia and Nitrite, whilst cleaning up organic waste.

The bacteria and enzymes are slowly released when they are needed most to address biological issues in the pond that are often the cause of poor clarity.

PURE POND balls work particularly well within the Nexus filtration system helping to smooth out any peaks and troughs in the Ammonia / Nitrite cycle. Simply add the balls into you biological chamber, ideally held within a filter bag, where they will agitate alongside the K1 Media.

When using PURE POND balls as a maintenance product, especially when added once a month into your filter, the balls will help to maintain crystal clear and healthy water.

Please note PURE POND is not intended to clear green water.


  • Bacteria and enzymes delivered in gel-like balls

  • Maintains crystal clear and healthy water

  • Breaks down ammonia and nitrite

  • Cleans up organic waste

  • Reduces filter maintenance and cleaning

  • Ideal for use as a maintenance product

  • Suitable for use in all types of ponds

  • Add to filter for best results

  • Available in 500ml, 1litre and 2 litre

500ml Price £9.95

1l Price £18.95

2l Price £34.95












Evolution Aqua - Pure+ Filter Start​

PURE+ Filter Start Gel is a live, concentrated bacteria culture for use in new pond filters. The gel based solution will stick to the filter media, allowing the nitrifying bacteria it contains to rapidly colonise your filter. Once the filter media has been coated with PURE+ Filter Start Gel, the beneficial bacteria within the gel will speed up the maturation of your filter media, while helping to convert ammonia and nitrite, resulting in less stressed fish.

PURE+ Filter Start Gel now sits alongside the award winning PURE Pond Bomb and PURE Pond to make a full product range that should be added to every pond keepers’ armoury.

The PURE+ Filter Start Gel is well suited for use in bead filters, particularly Evolution Aqua’s K1 Micro Bead filters to speed up maturation from day one but is equally effective when spread on Japanese matting, conventional beads and other types of filter media.

PURE+ Filter Start Gel is available in 1 Litre and 2.5 Litre sizes.

  • Live, concentrated bacteria culture

  • Gel sticks to the filter media, allowing the nitrifying bacteria it contains to rapidly colonise your filter

  • Beneficial bacteria within the gel will speed up the maturation of your filter media

  • Helps to convert ammonia and nitrite, resulting in less stressed fish


Available in 2 sizes: 1 Litre treats ponds up to 10,000 litres, 2.5 Litre treats ponds up to 25,000 litres

Price £19.95



























Microbe Lift Super Start ​

Microbe-Lift Super Start Bead Filter Bacteria has been specially formulated for all biological (bead) filters). Like most types of mechanical/biological filters, bead filters rely on the use of a media that provides a high surface area/volume ratio. This allows for the support of the necessary biomas, in the form of a biofilm, to properly remove organic and inorganic waste from the water.

When used according to the recommended dosage instructions Microbe-Lift Super Start will provide the following benefits:

  • Rapid establishment of organic removal capabilities

  • Rapid establishment of the nitrogen cycle including nitrification and denitrification

  • Reduces the build up of residue in the filter, reducing maintenance and improving the filters efficiency

  • Promotes the breakdown of risidual medications, like tea tree oils and formalin products which are inhibitory to most bacteria after use

  • Promotes the rapid recover of your filter after the use of medications and antibiotics

  • Effective over a wide pH range

  • Reduces ammonia nitrogen levels

  • Significantly reduces noxious odours caused by algae, fish waste and urine

  • Reduces hydrogen sulphide, which creates strong offensive odours

Available in 1L

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