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Reference to David Robinson E- mail on Barley Straw Here are the some
facts. This was posted in one of the article on the web.
Barley Straw is Organic Algaecide, this research was done by Aquatic Weeds
Research unit U.K.
It takes about six to eight weeks for barley straw to become active after
it is placed in the moving water.
After that barley straw will remain an active algaecide for approximately 6
Microbial growth, oxygen and warm water temperature activates the
decomposition of the straw. With sufficient water flow through the straw.
lignins oxidize into homic acids and , with sunlight and oxygen, destroy
algae, with no effect on higher plant and aquatic life.
Barley straw decompose slowly so its oxygen demand does not cause problems
unless an excessive (100gm per square meter) amount of straw is used.
Stagnant water will go anaerobic inside the straw bundle killing the
How much barley straw to use ? 2.5 gm per square meter of water surface.
in water with severe algae problem high first treatments up to 50 gm per
You can tie the straw in small bundles, or stuff in to net bags and place
them in water movement area.
Where to buy from ? Aquatic Eco System 800-422-3939, $ 6.95 for 1/2 lb.
All the research for this was done in the ponds. There is no study for
aquariums. I am planning to use this in my new pond this year.