So I did get quite into this subject a couple months back. The following sites will provide some interesting reading. The primary gem that I gleaned from this data was that barley straw will act to inhibit the proliferation of algae. Barley straw will NOT cure an algified (just made that one up) tank. In essence it is preventative medicine and not a silver bullet. Having done all this research I have NOT succumbed to the lure of the barley except in the form of a good ale or single malt. Another point that seemed quite clear was that there is really no necessity for the barley straw to come from "the old country". I live in a part of the world that grows an enormous amount of malt barley (beer brewing barley) and therefore I have what could be described as unlimited access on a free for the taking basis. That seems wonderful however, I have some serious concerns for what nasty chemicals may well be in that straw. These chemicals could come from leaching relative to previous herbicides, pesticides and fertilizers used in the malt production. However, I would be even more concerned with the contamination as a result of the current crop year use of the noted chemicals. One could use say a 20G tank with a few inexpensive fish for a test run. I will not get into the moral issues that surround "live testing". I had intended to visit some of the horticultural establishments in search of the "holy straw' in this area but, I just haven't go around to it as yet. I would try this preventative maintenance process if I was able to satisfy myself that I was not "issuing a death warrant" to the critters in my tank. It's almost like the search for the "organic" barley straw. Whoa, maybe there is an alternative market here for a malt grower or perhaps for the seed farm that is producing malt barley seed.
The mind boggles!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Cheers;
Vic
http/barleyworld.org/barleystraw/Barley%...nal%20Final.pdf
http/www.azgardens.com/aquarium_chemicals.php
http/barleybales.ca/
http/www.naturalsolutionsetc.com/garden-...gae-control.htm
http/www.btny.purdue.edu/pubs/APM/APM-1-W.pdf
Forgot the following:
Authentic Scottish Barley Straw
The Natural Solution to Algae Control
Now you can promote a healthier ecosystem for your aquarium or pond by using authentic Scottish Barley Straw, a technique which has been employed since the Middle Ages to naturally promote an ALGAE FREE environment. 100% safe for ALL wildlife, including the most delicate shrimp, fish, and plants because it is 100% natural and biodegradable.
In the aquarium, install a small portion (about a handful) of barley in your canister or hanging filter, or sump. We recommend using a micron filter bag (see below). Our small 4oz size should last a normal home aquarists, a long time.
In your pond, install it in your waterfall spillway, skimmer basket, or just throw it in anywhere! Most smaller ponds will require the 4 or 8 ounce size barley straw. (4 & 8 oz barley come already packaged in a mesh bag, the 30lb bale comes with 3 mesh bags)
Algae growth in ponds or aquariums can pose several problems. It can clog pumps, block filters, cause odor problems, and is generally considered to be aesthetically unacceptable. The proliferation of algae appears to be closely associated with the high levels of certain nutrients, especially phosphorous and nitrates in the water. High nutrient levels are often found in ponds and lakes associated with parks, golf courses, housing complexes and industrial sites.
Conventional control of algae can be either mechanical or chemical. Both methods can be expensive and inefficient. Depending on the pesticide or herbacide used, chemical control may limit irrigation use or harm non-target aquatic plants and other aquatic life and fish. In some instances the algae problem may increase over time if competitive plants and algae-feeding fish are not present.
In addition to using beneficial alage eating fish and snails, barley straw has been suggested for use in ponds and aquariums for algae control. The barley, as it decomposes, slowly releases hydrogen peroxide and humic acid into the water at levels that are toxic to algae.
The algae are suppressed best when the straw is decomposing in a well-oxygenated environment.
Too much straw can deoxygenate the water.
It is best if the straw is applied loosely so that water can move freely through it. A cage or netting can contain the loose barley.
The barley works best when it is at or near the water's.
It is better to use multiple "barley stations."
No negative side effects have been reported; in fact, increased invertebrate populations and improvement of gill development in fish from ponds where barley straw was applied have been observed.
Here are some other important features:
These are made from High Grade Scottish Barley (the same kind high quality Scotch is made from)(NO. Not the kind of straw you might find in a cattle-feed store!)
They are fully biodegradable.
They can provide natural food for your fish.
Each bundle comes with it's own sturdy mesh bag. 30# bales will come with three (24x36) mesh bags.
This method can be started any time of year, new or old.
No chemicals used ever in the processing of this barley!
4oz Barley Straw Bundle-Bale treats up to 500 gallons of water for 4 months-YOUR COST ONLY 9.99
8oz Barley Straw Bundle-treats up to 1000 gallons of water for 4 months-YOUR COST ONLY 17.99
30 POUND Barley Straw Bale (bale size is compressed into 24" x 18" x 10") treats up to 1/4 (quarter) acre or 10,000 sq ft of water for 4 months-YOUR COST ONLY 96.99