Maxwell AlgaPhite

Maxwell AlgaPhite

What does AlgaPhite do?

AlgaPhite removes Algae & Blanket Weed from Ponds & Lakes.

  • Prevents blanket weed and algal blooms
  • Helps to prevent green and cloudy water
  • Reduces organic silt build-up
  • Eliminates odour problems
  • Non-chemical, safe for fish farms and irrigation ponds




Natural bacteria and fungi, buffers and natural dispersing agents. Including 13 primary strains of non-pathogenic bacteria at a concentration of 2 billion colony-forming unit's (CFU’s) per gram.


Maxwell AlgaPhite is a natural formulation of bacteria, enzymes, buffers and dispersing agents. Some of the species of bacteria in AlgaPhite use nitrates and phosphates that stimulate heavy algal growth as their own food source, starving the algae and reducing algal growth. This help to prevent algae blooms by removing nitrates and phosphates -the primary food source of algae from the water. The remaining species break down the organic solids from fish and waterfowl waste and decaying plant material that causes cloudy water, sludge build-up and foul odours.


Maxwell AlgaPhite is harmless to pond animal life and to rooted plants. The microbes in AlgaPhite help to break down the toxic ammonia and nitrite compounds that accumulate in ponds with large fish or waterfowl population, the use of AlgaPhite can create a less stressful environment for aquatic animal life.

Application & Dosage

Initial dose: Use two 227 g sachets per 800 m3 (176,000 gallons) of water. Followed by one sachet per week.

  • Simply throw the required number of sachets into the water so they disperse equally around the body of water.
  • Apply on a weekly basis throughout the spring/summer and autumn when water temperature exceeds 7°C.
  • Although AlgaPhite can be used at any time of the year, it performs best when water temperature is above 10°C.

Additional Information

Maxwell AlgaPhite will control existing algae problems by removing the food source. If being used to clear growing algae, up to 4 weeks should be allowed for noticeable results. It may take up to 6-9 weeks to remove nitrogen stored in severe algae blooms and for this reason, it is best used as a preventative.

  • Do not apply if the water temperature is below 7°C.
  • A water pH higher than 8.5 and high levels of iron or manganese in the water will inhibit the action of AlgaPhite

IMPORTANT: To give ample opportunity for the bacteria to successfully colonise a body of water it is important that a volume of water subject to a flow retains a minimum volume of the original water over a specific period of time, as per the following table.

Size of Water Body with FlowRequired Water Retention
Less than 1000 m350% retention of water over a 2 week period
Greater than 1000 m3 80% retention of water over a 4 week period

Please Note: Avoid breathing dust. In case of inadequate ventilation, wear respiratory protection.

IF INHALED: If breathing is difficult, move victim to fresh air and keep at rest in a position comfortable for breathing. If experiencing respiratory symptoms call a doctor/physician. Dispose of contents/container in accordance with local regulations.

For further information on Maxwell AlgaPhite, please contact a member of our Technical Sales Team on

Delivery charges (if applicable) applied at checkout. Next working day delivery is available on ‘In Stock’ items, on orders placed before 12 noon. Please allow 3-5 working days on all other orders – possibly longer during the festive season & bank holidays. Please note deliveries to more remote areas may also take longer. More delivery info Please Note: If you have any access restrictions for lorries or large vehicles please speak to our sales team on . Collection from our Naul, Co. Dublin, Trade Counter is available for this product. More info on collections