Aquaforte Phospat 1

Aquaforte Phospat 1

Pond water testing support for safer treatment decisions

AquaForte Phospat 1 is a phosphate-removing cartridge for ponds, natural pools, fountains and circulation wells. It is designed to keep phosphate below the level at which blanketweed and algae can thrive, while remaining safe for plants and biological filtration.

Aquaforte Phospat 1 is a highly effective phosphate filter designed to reduce one of the main contributors to blanketweed and algae growth in ponds—excess phosphate. Using advanced filtration media, this unit keeps phosphate levels below 0.035 mg/l, the threshold at which algae cannot grow, yet remains perfectly safe for plants, fish, and beneficial bacteria. What sets the Phospat 1 apart is its permanent phosphate binding.

Unlike some filters, it does not leach phosphate back into the water once saturated. With an adsorption capacity of up to 90,000 mg, this compact but powerful filter supports water quality while enhancing the performance of your biological filtration system. The Phospat 1 is ideal for ponds, natural swimming pools, fountains, and circulation wells, with a maximum flow rate of 1100 litres per hour and suitable for pond volumes up to 50,000 litres (50m³).

Water testing products are the starting point for most pond treatment decisions. Accurate test results help show whether the issue is ammonia, nitrite, pH, KH, phosphate, chlorine, nitrate or another water parameter. This avoids guessing, reduces unnecessary dosing and gives a clearer record of how the pond responds after treatment, water changes or filter maintenance.

AquaForte water treatment products include phosphate control, water improvement and sludge/nutrient management. Their Phospat products reduce phosphate, one of the key nutrients that feeds filamentous algae and green water issues.

Testing guidance

Use Aquaforte Phospat 1 before choosing a treatment, after a water quality incident and during seasonal changes when feeding, temperature and biological activity alter. A written record of results is valuable because trends often explain pond problems earlier than a single one-off reading.

Key benefits

• Helps identify water quality issues before treatment
• Supports safer dosing and better troubleshooting
• Useful for koi ponds, garden ponds and larger pond systems
• Helps track key parameters over time
• Reduces guesswork when fish behaviour or clarity changes
• A good first step before using medicines or water treatments

Technical information

• Brand: AquaForte
• Treatment type: Dechlorination and water purification
• Product form: Liquid / pond treatment
• Target issue: chloramine, Chlorine, tap water contaminants and heavy metals
• Best use: Year round / Water changes
• SKU / product code: MD995
• Dosage / capacity guidance: Phospat 1 adsorption capacity approx. 90,000mg phosphate; flow up to approx. 1,100 LPH; suitable up to approx. 50m³
• Important note: Use before dosing pond medicines or water treatments where water quality is uncertain

How to use safely

The product label should always take priority over general guidance. The points below are included to help customers use Aquaforte Phospat 1 in a more careful and informed way.

• Use clean test vials or equipment to avoid false readings.
• Check expiry dates on reagents and replace them when out of date.
• Rinse equipment with pond water before testing if the instructions require it.
• Record results so trends are easier to spot.
• Test before dosing treatments and again afterwards where suitable.
• Follow the supplied instructions for timing, colour comparison or digital reading steps.

Helpful related products and advice

Use these links to compare similar products in the same range or choose supporting testing, purifier or maintenance products where relevant.

• AquaForte Biostabil Water Improvement
• Aquaforte Phospat 3
• Evolution Aqua Detox Dechlorinator 12 Inch
• Evolution Aqua Detox Dechlorinator 30 Inch
• Oase Inline Dechlorinator
• Browse pond water testing
• guide to maintaining ideal pond water conditions
• koi water quality guide
• pH levels in ponds guide
• water hardness and pH stability guide