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2018: Added to my filter and in pond, leaving them floating for sun to rot as articles suggested. Seems to be helping with algae. However, the thing that cleared my pond the fastest was an addition of an aerator about a week after barley. Cleared it in 2 days. I have a waterfall and aerator with 2 hoses blowing air bubbles in my 600ish gallon pond. My algae was terrible as soon as we has 1st heat spell in PA. I couldnt see the bottom or any fish, had green pea soup water. Plants were not helping. Algaecide or draining/cleaning also did not help. But bumping up amount of activated carbon, adding floating barley bales, and aerator to work with existing waterfall, has worked great! Can't believe I can see fish! Will keep using barley since it's natural and won't harm my plants or fish through the summer.
We have a small (130 gallons) pond that had a ton of algae. I keep this partially submerged. This seemed to quickly get rid of some of the algae, making the water noticeably clearer. But the sheets of algae on the surface are unaffected by this, as far as I can tell (it's been 2 months). But those are easy to clean: using a tip from somewhere on the internet, I got a toilet bowl cleaning brush--you just slowly roll it on top of the algae and it all sticks to it. Then you use a stick to get the algae off the brush. Quick and easy.
I was unsure these relatively small packages of barley straw would work. I had algae so thick my geese could nearly walk across the small pond. I can't be certain if it was the barley straw, or simply the life cycle of the algae, but in a couple weeks it got much better and in a month it is gone. I could not find barley straw locally so I tried these. The straw is wrapped in netting and I tied nylon twine around each and secured them to the pond bank. I am happy with the result.... Much better than chemical algaecide. I would recommend giving them a try.
We have a 500 gallon koi pond in our backyard in southern AZ and the string algae just EXPLODES a couple times a year when the weather is right. These straw bales have really helped! They've been in our pond for over 8 months and though they don't stop algae from growing completely, we haven't had ANY string algae form. They do take some time to "kick in" as indicated on the package (at least a month), and they don't last as long as the company says either (they eventually disintegrate in the water). But still, for 10 bucks 1 bale lasts about 2 months and our algae situation is so much improved. No chemicals and it doesn't seem to bother our fish. We're customers.
Along with other products this seems to help quite a bit with algae in my watergarden. I put 4 in one of the axillary feeder features and it circulate the treated water throughout the 4,000 gallon pondn
Used it in cow water trough. Put it near water inlet as instructed. It works awesome until 1 trough the cows tore it up & ate the straw. You need to sell little sturdy cages for them. Otherwise they are great & work very very well.
I bought these after reading online. I was concerned it was kind of made up nonsense, but bought them to try! I have a small pond that's for the most part in all day sun. I have a turtle that lives in it. I had to empty clean it often because of algae. I put one of these in and I have onlu had to clean it once in 2 months. And that just because of the wind blowing stuff into it. These work great! I have had no algae at all