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Did you know?

Poor water quality can also pose a health risk for ecosystems. Too many nutrients in the water can cause excessive algae growth.

Williams Park Pond

Eastbourne Hutt City Council

Williams Park Pond in Eastbourne is surrounded by large established trees and has a small island at one end.

The pond has a firm clay base and is 1200mm deep. Previously, Hutt City Council had drained the pond into the sea and flushed the sludge away with it.

Parklink’s treatment programme began in 2011 and the pond’s condition improved dramatically in the first three to four months, with the water turning crystal clear.

Full case study

Industry Leading Solutions
for Good Water Quality

Water Column Clarifier

Water Column Clarifier

The Perfect Solution for Clarifying Your Water

Water Column Clarifier is a high-performance liquid probiotic that clarifies water through enhanced biological flocculation. This formulation removes nitrogen and temporarily binds phosphorus in the water column. Designed for aquatic professionals, it quickly restores balance and improves clarity in lakes and ponds.

Water Column Clarifier excels when used alone or after algaecide treatments to flocculate and precipitate dead algal cells. For an extra boost, Water Column Clarifier can also be used in combination with AquaSticker or PondZilla.

See how it works

The science behind it

A weak microbial community can be a contributing factor leading to poor water quality and poor clarity. Chemical treatments, washouts, and runoff are all common events that can negatively impact the abundance or activity of microbes in an aquatic environment. Ailing microbes and poor floc-formation can limit the community’s natural capabilities and lead to increased turbidity and nutrient overloading.

Water Column Clarifier’s proprietary formula uses select bacteria cultures and bio-stimulants to enhance biological flocculation. This process creates a microfloc which further removes turbidity from the water column. Water Column Clarifier provides a natural way to improve water clarity and quality.


Common Uses

  • Lakes and ponds
  • Aquaculture
  • Hatcheries
  • Water features
  • Golf courses
  • Retention ponds
  • Decorative Ponds
  • And more!


  • Establish healthy bacterial cultures
  • Consumes nitrogen & phosphate
  • Enhances clarity
  • Balances pond
  • Keeps pond and fish healthy

Available sizes

  • 9.4-litres (2.5 gallon jug)
IngredientsMicronutrients and select bacterial cultures
DescriptionLight tan liquid
OdorSlight earthy odor
pH7.0 - 7.5
Stability – Activity lossAt 24°C for 12 months*: 10% or less; At 38°C for 6 months*: 10% or less; *When stored as directed in a sealed container out of direct sunlight.
Storage and HandlingStore in a cool, dry space between 10 - 27°C. Keep out of direct sunlight and do not store with strong oxidizing agents.


Dosage Rates

Every 2 to 4 weeks as needed.

Acre FootInitial ApplicationStandard ApplicationHypereutrophic Water
1/4150 – 470 mL150 – 240 mL380 – 950 mL
1/2290 – 950 mL300 – 470 mL950 – 1,900 mL
1590 – 1,900 mL590 – 950 mL1.8 – 3.8 litres
52.8 – 9.5 litres2.8 – 4.7 litres9.5 – 19 litres
105.7 – 19 litres5.7 – 9.5 litres19 – 38 litres
10040 – 189 litres40 – 95 litres189 – 378 litres


 Include in treatment programs for:

  • Filamentous Algae
  • Planktonic Algae
  • Cyanobacteria


  • Muck & Sludge
  • Water Clarity
  • Nutrient Reduction


  • Aquatic Plants
  • Submerged Plants
  • Unique Issues


Blue Pond Dye

Blue Pond Dye

Parklink’s blue dye product is formulated for use in the smallest garden pond to the largest of lakes. Manufactured using the highest quality colours rigorously tested to European Food Additive Standards. Coloured Water filters light, disrupting the process of photosynthesis resulting in submerged weeds and algae being unable to grow.

Completely free of pesticides, algaecides

100 gm sachet

Each sachet treats 1,000,000 litre. (based on minimum dosage to inhibit algae growth)

How Does it Work?

  1. Algae and weeds require sunlight to grow. Dye modifies the water column so red spectrum wavelengths are partly blocked. This interrupts the photosynthesis process thereby restricting submerged algae and weeds from growing.
  2. Aesthetically enhances the colour of the water. Hides unsightly features at the bottom of the pond.


Calculate the volume of water in the pond:
Width (metres) x Length (m) x Depth (m) x 1,000 = Litres

  • Additional sachets can be added to darken the water further
  • You cannot overdose.


Wear gloves when handling. Do not open the sachet or touch the powder. Place the soluble sachet in the middle of the pond and let it dissolve.

Maintenance Top Ups:

A general starting guide is 10% of the original dose each month.


Health and Saftey

Avoid ingestion, inhalation, skin and eye contact of the powder. Do not use in or near potable (drinking) water. Wash any contaminated clothing separately.

In its diluted form, Parklink’s Dye is SAFE for all aquatic creatures and for livestock to drink.