Soilzyme Trial Treatment, Hawker Reserve Lake


Project Details

Water all year around is green, has surface algae

WSUD Category: Wetland/lake algae management

Criteria Information
Development Type:Public Open Space
Function/Driver:Water quality
Government Area:City of Rockingham
Site Context:Shallow groundwater
Year Completed:2019

Type of wetland

  • Constructed
  • Has 2 x Aerators and a sub-surface aeration system

Description of the wetland management issue

Water all year around is green, has surface algae.

Treatment trialled

  • Name of treatment: Soilzyme
  • Quantity used: 35 litres per dose 4 times a year.
  • Method of application: Poured around the perimeter of the lake in the concentrated form.
  • Is there any known scientific research supporting its effectiveness? ☐ Yes  ☒No

Date(s) of treatment

Applied on 20 August and 13 Sep 2019 (to date).

Outcome of treatment

  • Visual observations: Before treatment water was green and had severe surface algae. After the two treatments the water has lost most of the green colour and the surface algae has gone.
  • Have water parameters specific to the treatment claims been measured before and after application? ☒ Yes ☐ No
  • Water quality tests were completed before treatment but will wait till March 2020 to re-test.


Contact Officer:  David Latham