Biological Water Treatments – Why They Are Essential For Your Dam

Water Treatments

When sludge becomes a problem:

Sludge or ‘muck’ is the result of organic matter that accumulates over time and exists at the bottom of every dam. Sludge becomes a hassle if it begins to emit an unpleasant odour or houses excess nutrients. Nasty smells are bad enough, but excess nutrients are essentially just a delicious meal for aquatic weed and algae, so this can lead to algal blooms and other issues which can spring up very quickly.

Bugs that eat algae food!

Whilst introducing oxygen to your waterbody via aeration is the biggest and best step you can take to ensure water health, there’s another proven science that should not be ignored: Bioaugmentation.

This is because, aeration and bioaugmentation work hand in hand to optimize the integrity of your dam.


Bioaugmentation is the process of introducing bacteria, micronutrients, enzymes, and stimulants to the water to biodegrade groundwater contaminants, in other words busy bacteria that eats sludge!

There are numerous methods of introducing good bugs to your dam, but our favourite has got to be in pellet form.


What does a biological pellet look like?

Biological pellets are small, dry brown bullets that become alive and release probiotics when in contact with water. They immediately sink, landing directly onto the muck and get to work by delivering essential bio-stimulants and select bacterial cultures. Results are seen within two weeks.

How exactly will biological pellets help?
  • They balance the ecosystem of the water by consuming the nutrients that algae and aquatic weeds require to survive. (aka the algae starve to death!)
  • By ensuring consistently healthier water, you will be able to stock larger numbers of fish.
  • By organically digesting muck, the costs of mechanical dredging are drastically reduced.
  • The broad spectrum of organisms found in biological pellets typically eat up 70% of sludge in a dam.
  • Pellets lower ammonia levels by introducing bacteria that is pH-friendly.
What kind of organic matter do biological pellets eat?

Dead leaves, grass and weeds. Waterfowl waste and fish poos!

What don’t they like eating?

Sticks, gravel, rock and sand.

Are they safe for my fish?

Our biological pellets and fish friendly which means they are 100% non-toxic to your fish if consumed.

Where do I apply biological pellets?

You can concentrate the application directly onto specific areas like shorelines but to experience full sludge-eating effects, get in your kayak, load up the fertiliser spreader and distribute them evenly over the targeted area in your dam! Always speak to an Aquatic Specialist for the best advice in treating your dam.

When do I use them?

Unlike traditional treatments like algaecides and herbicides, biological pellets are both a preventative and a cure, meaning application can be made at any time of the year, adjusting only your dosage rate according to whether your mission is upkeep or to attack!

Whilst we recommend that the pellets are applied year-round, it is worth noting that these very hungry bugs become even hungrier with warmer weather, so it is best to apply the pellets when it is warmer than 17 degrees Celsius and under 55 degrees Celsius.


Need more than 20kg? Call us on 1300 283 387.

  • David Rowe wrote...


    I’d like to buy so pellets for a 2000m2 dam.



    • The Terrific Treatment Tardigrade wrote...

      Hi David,

      If you’d like to give us a call on 1300 283 387 or fill out a contact form one of our friendly specialists will be able to help you out with this 🙂

  • Helen wrote...

    Need to purchase enough pellets to treat a small ornamental dam which is approximately 20 metres long x 15 metres wide and 6′ {180cms} deep in the middle.

    Please don’t ask me to phone as prefer email which I can attend to out of business hours.

    Please confirm cost, delivery if applicable to Upper Beaconsfield VIC}. As it appears products can’t be bought online on confirmation we can arrange a c/card payment.

    Thank you.


    • The Terrific Treatment Tardigrade wrote...

      Hi Helen, Thank you for your enquiry. Your enquiry has been forwarded to our sales team who will be able to assist you directly.

  • Eric Davidse wrote...

    I have a dam that is 20 mtrs x 20 mtrs and around 3mtrs deep i have an algal bloom described as the stringy type on the surface and on the ground. we are i Boddington WA

    • Water Quality Solutions wrote...

      Hi Eric, Thank you for your enquiry. It has been forwarded to our sales team and they will be in touch as soon as possible.

      Kind Regards,
      Water Quality Solutions

  • John Cotton wrote...

    Would like to improve my dam’s water quality by trying Biostim pellets.
    The improvement since I installed a fountain that aerates the water is considerable and has reduced the algae growth.
    However the water is still murky and I wish to make it more clear and healthy.

    The dam is around 18 metres in diameter with mostly steep edges going down to 4 metres deep in the centre.
    We have a Lilly patch on one side of the dam and enjoy lots of frogs.

    The water source is fed from the roof of my home and shed as well as being a natural soak.
    We use the water to irrigate our garden and lawns.

    Would appreciate pricing and application rates that you consider will assist.
    Have not tried fish as yet because we don’t want our frogs to be threatened any more than they are now from predatory birds.

    Ducks were a problem initially but now have them under control.
    I am in Roleystone in the Perth hills, WA.



    • Water Quality Solutions wrote...

      Hi John, Thank you for your enquiry, it has been passed onto our sales team and they will be in touch as soon as possible.

      Kind Regards,
      Water Quality Solutions

  • Colin holden wrote...

    Hi, I require pellets for a dam of 20m. diameter that I use for vegetable patch irrigation. Can you please advise me quantity , cost and postage to nsw 2325. Regards, Colin.

  • jim wrote...

    Have a business in SA, customers are always needing solutions to algae in dams and troughs, i would be interested in stocking some pellets for them, best regards Jim 0419713417

  • Michael wrote...

    I have a 25x35m dam 1.8m deep stocked with silver perch. My color is brown (not clay color) clear only around the edge.

    What do you recommend to clear the water?

    • Water Quality Solutions wrote...

      Good Morning Michael– I have sent you through an email to get some further information off you.
      Please check the Junk Folder just in case it goes there.
      Have a great day.
      WQS Team Member

Comments are closed.

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