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Barley Straw

Barley Straw Planter

Research through Aquatic Weeds Research Unit UK indicates that barley straw is highly effective in reducing algae.

An organic approach to algae control!

It takes six to eight weeks for it to become active after it is placed in moving water. After that, barley straw will remain an active algaecide for approximately six months.

Microbial growth, oxygen and warm water temperatures activate 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 will decomposes slowly, so its oxygen demand does not cause problems unless an excessive amount of straw is used. Stagnant water will go anaerobic inside the straw bundle, killing the microbes, so be sure to keep the water moving.

How much to use?

Barley straw is most effective in shallow (1 m) water with sunlight and good circulation. Clear water needs less straw, but with turbid, muddy water and less sunlight, more straw is required. Low temperatures are less effective. Water surface area is used to calculate dosage. In still water ponds, the minimum quantity of straw needed to reduce algae is 2.5 grams (.09 oz) of straw per square meter of water surface. In water with a severe algae problem, high first treatments up to 50 grams (1.8 oz) per square meter may be required. Start with small quantities and monitor effects. Barley straw may be prestarted in nonalgae problem areas with good oxygenated water flows.

• Treats up to 1500 gallons
• Lasts up to 6 months
• Floats on pond surface
• Plant one small shallow-water plant in center of floating barley planter
• The barley gradually decomposes aiding in algae control
• Approximately 9" diameter, 6" high

~Price $19.00 Small Planter

Large Barley Straw Planter

• Treats up to 4000 gallons
• Lasts up to 6 months
• Floats on pond surface
• Plant one small shallow-water plant in center of floating barley planter
• The barley gradually decomposes aiding in algae control
• Approximately 11" diameter, 7" high

~Price $23.00 Large Planter