Pond and Water Gardens

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Algae Treatment Guide

Posted by Terese on Monday, 13 June 2011 in Pond Keeping

Step 1: ASCERTAIN the type of algae:

Greenwater Algae is microscopic, causing the water to look like green cordial or pea soup.

Blanketweed looks like green cotton wool and floats on the surface. It may also proliferate in water courses and streams as “slime”.

Step 2: TREAT:

Choose your treatment option from the chart below and determine the pack size required from your pond size, in litres.

Step 3: PREVENT:

Use the preventative treatments as suggested, to reduce further outbreaks.


Greenwater Algae	Blanketweed
Treatment Option	Treatment Option
Check pH with: pH Test Kit, and if high	First: Physically remove as much as possible (Book a Call out)
Adjust with: pH Adjuster for Alkaline Ponds	Check pH with : ph Test Kit, and if high
Then treat with: Greenaway	Adjust with: ph Adjuster for Alkaline Ponds
Followed by (to consume dead algae):	Then use: Pond Balance
Sludge Buster	or String Algae Buster Powder
OR Bioactive Sludge Control
PREVENT WITH	PREVENT WITH
Extract of Barley Straw	Extract of Barley Straw
With Clarifer Bacteria	with Clarifer Bacteria
or Install a Biofilter	or Install a Blagdon Electronic Blanketweed Controller
and UV Clarifier for long term prevention	OR an I-Tronic Blanketweed Controller

Note: If pH is high, treatments will not be as effective.

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