Water treatment

Your pond in top condition

To enable you to enjoy your pond to the full it is important that your pond water is in top condition. To keep your water in top condition you should regularly check your water values and add water treatment products and pond bacteria. In this section you will be introduced to a number of reputable brands for water treatment and pond bacteria. These will help you to achieve, restore and maintain the natural balance in your pond.

What are water values and why are they so important?

All the water values combined determine the overall water quality. Since ponds in a garden are often much more densely populated than they are in the wild, we need to give nature a helping hand to achieve a healthy balance.

TIP: AquaForte Dosage Pump

AquaForte Dosatech 3 knops

Dispenses liquid solutions such as water treatment products and bacteria into your pond’s piping system.

AquaForte Water Treatment Products

AquaForte Pond Support Water Treatment

Aquaforte Pond Support offers a complete range of water treatment- and bacterial products.


  • GH+: Increases the Total hardness (GH value magnesium/calcium hardness) of your pond
  • KH+: Increases the alkalinity (carbonate hardness) of your pond
  • Maerl: Suited for the Construction of new ponds. Provides stable and healthy water quality in existing ponds. Increases the hardness of the water. Promotes the growth of beneficial micro-organisms
  • PH-: Decreases the pH value of the water
  • Oxypower: increases the oxygen level of the pond, promotes the resistance of fish against harmful products like ammonium and nitrite. Naturally reduces the sludge layer on the bottom of ponds
  • Algae powder: removes and prevents the growth of blanket weed
  • Pond salt: Prevents strong pH swings, high ammonium values, nitrite poisoning, fungus, parasites and reduces fish stress
  • Maintenance bacteria: take care of natural water cleaning processes
  • Nitrifying bacteria: for the start-up and maintenance of the biological processes in the pond water
  • Anti sludge bacteria: Remove algae and sludge in a biological and natural way
Art. nr. Type Volume
SC840 GH + (powder) 1 liter (± 1kg)
SC850 GH + (powder) 2½ liter (± 2½kg)
SC851 GH + (powder) 10 liter (± 10kg)
SC842 KH + (powder) 1 liter (± 1kg)
SC838 KH + (powder) 10 liter (± 10kg)
SC847 Maerl (powder) 1 liter (± 900g)
SC839 Maerl (powder) 10 liter (± 9kg)
SC845 PH- (powder) 1 liter (± 1500g)
SC841 Pond Salt 1 liter (± 1200 g) 1 liter (± 1200g)
SC848 Maintenance bacteria (liquid) 1 liter
SC849 Nitrifying bacteria (liquid) 1 liter
SC844 Antislib bacteria (liquid) 1 liter


Filtercardridge to remove phosphates

Phosphate is one of the main nutrients for algae (blanket weed) in a pond. With these filter cartridges it is possible to keep the phosphate level below 0,035 mg/l! This is the “magic” limit that is too low for algae to grow but does not harm plants and bacteria. When the cartridge is saturated it must be replaced (re-filling or regenerating is not possible). A great advantage compared to other phosphate binding products is that the Phospat does not release the phosphate at all! The phosphate binding capacities of the Phospat cartridges is 30-100 times more compared to Iron (III) oxides.


  • Reduces phosphate in water and supports the biofilter
  • Suitable for ponds, natural pools, fountains and circulation wells
  • Adsorption capacity is approximately 90.000 mg (Phospat 1) or 270.000 mg (Phospat 3) phosphate!
  • Flow rate up to 1100 l/h (Phospat 1) or 3300 l/h (Phospat 3)
  • Defined particle size of the individual layers
  • Suitable for up to ±50m³ (Phospat 1) or 150m³ (Phospat 3)
  • Several PHOSPATs can be combined for larger volumes of water
  • The Phospat should be protected against contamination with appropriate pre-filtration.
  • Max. working pressure: Phospat 1: 6 bar, Phospat 3: 4 bar
Art. nr. Type Connection Max. flow
MB576 Phospat 1 1” Male .thr. 1.1 m³/h
MB577 Phospat 3 1” Male .thr. 3.3 m³/h

AquaForte Pondzinger

Flocculant/Phosphate remover


After years of research and many erosion and sediment control, stormwater, and pond clarification applications, we are pleased to introduce a new product for the pond market: the Pond Zinger™. The Pond Zinger™ is a pond clarification product designed and formulated for backyard ponds. It is made of safe, non toxic, polymers and safely removes algae from ponds, creating a healthy ecosystem with clean, clear, beautiful water, where aquatic life can thrive. Attached to a fountain, bubbler, aerator, the steps of a waterfall, or at the end of a filter system, the Pond Zinger™ slowly dissolves, releasing its components into the pond where excess nutrients, such as Phosphorous, bind together and settle out.

The result is improved pond water quality in terms of clarity, reduced phosphates and algae, odor control, decreased suspended solids, and metal discoloration removal. The created sediments can be removed by the bacterial action of MicrobeLift Clean & Clear!

Independent studies have shown that the PONDZINGER™ can remove up to 75-85% phosphorus from pond!

Once the water is clean, any remaining Pond Zinger™ can be removed from the pond, dried, and then stored away from sunlight until it is needed again. The pond should remain clean for the season, unless more phosphorous enters it.

There are 2 versions available for different water volumes:
Pond Zinger: up to 45.000 liters
Mini Pond Log: to 400,000 liters

Art. nr. Type Max. pond 
MB560 AquaForte Pond Zinger 45m³
MB561 AquaForte Mini Pond Log 400 m³

AquaForte Alg-Stop & Alg-Stop Liquid


The active ingredient in AquaForte Alg-Stop is “packed” inside an additive that algae eagerly take in. Alg-Stop will block any further, vital, nutrient uptake. It does not withdraw nutrients from the water but makes the nutrients unavailable for the algae. Alg-Stop penetrates the algae and destroys the calcium skeleton which releases the algae from the surface so they can be filtered out of the water. Any measurable phosphate levels after the addition of Alg-Stop are no more relevant and can be neglected. Alg-Stop does not contain ammonium compounds or metal salts. Alg-Stop dissolves quickly in water so the algae can take it in fast.

Please note when using Alg-Stop: do not use Alg-Stop in combination with other blanket weed products, active carbon, nitrate resin and ozone. For optimal use please check water values before using Alg-Stop: GH value (optimal 12, at least 6), KH value (optimal 8, at least 4). Please dosage again after heavy rainfall or water changes. Please double the dosage for heavy algae areas or shallow water zones.

Alg-Stop is perfectly suited for natural swimming ponds. To keep the pond free of blanket weed, use Alg-Stop at least once per month.

Art. nr. Type
SC810 Alg-Stop 2,5 kg (powder)
SC812 Alg-Stop 5 kg (powder)
SC814 Alg-Stop 10 kg (powder)
SC811 Alg-Stop Liquid 2,5 liter
SC813 Alg-Stop Liquid 5 liter
SC815 Alg-Stop Liquid 10 liter

AquaForte BioStabil

Water quality enhancer


Improves water quality within a short time to provide a stable pond environment for Koi and other Coldwater fi sh whilst maintaining a consistent natural PH value, a stable alkalinity (KH) level and neutralises ammoniac and heavy metals. Fish vitality will greatly improve together with enhanced colour intensity.

Better water in 20 minutes:

  • For fish vitality and enhanced colour
  • Crystal water and natural pond environment
  • Neutralises ammoniac and heavy metals
  • Maintains natural KH & PH values
Art. nr. Type
SC807 Biostabil 2,5 kg

AquaForte Oxypond


Oxypond (previously Oxypower) is not a chemical, but an active oxygen preparation that affects the cell structure of the algae, which makes them smaller or disappear.

Works directly against blanket weed by means of active oxygen:

    • Contains special bacteria that break down algae residues
    • Acts preventative against parasites and gill necrosis
    • Absolutely free of heavy metals or organic biocides

Improvement of the water quality
In ponds surplus like uneaten food, fish droppings and organic build up, which will cause anaerobic sludge. These processes cause the declining of the oxygen in the water, which causes a lot of stress among the fish. Stress declines growth of the fish and makes them vulnerable to diseases. By using Oxypond the water quality clearly improves. Thanks to Oxypond the water exceeds in oxygen, which improves the life quality the fish demand. At the same time the colour and clearness of the water improves and becomes pure. Furthermore Oxypond fights blanket weed in a biological way. Add Oxypond directly into the water or onto the blanket weed. Do not exceed the advised dose.

Important: Do not use if the pH-values exceed ph 8,6. Treatment is allowed to be repeated after 3 days.

Art. nr. Type
SC800 Oxypond 1 kg
SC802 Oxypond 2,5 kg
SC804 Oxypond 5 kg

Partner brand: Microbe-Lift pond water treatment and improvement


The biological products from Microbe-Lift ensure that your pond water is optimal every season and therefore save you the necessary maintenance. How? By giving the natural processes in your pond a big boost at the right time. This way, the harmful processes in your pond are cut off at an early stage. As a result, you will not be bothered by, for example, algae and dirt that accumulate in your filter but you will also prevent sludge from forming on the soil so that harmful gasses resulting therefrom do not affect water quality. In most cases you can halve the maintenance that must be done later!

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