Jimmy I could be talking absolute gonads here (not unknown) but if you have barley straw in the pond I wonder if the effect will work on the stream by virtue of the circulating water?Part of the issue is it not a pond, it is a small stream, with a small head of water running about 4 yards long, and a maximum depth of only inches, so barley straw bundles will not work.
Wish I had known that for the Ruschbahn Pond. Was a big one as you see and blanket weed became a real problem never resolved before Andy sadly died and we did try a few remedies. Pic on day that we filled it, the local wildlife soon found the pond!My two cents: Salt! dilute 5 grams per litre water.
I have had a pretty large pond with sturgeon, some 250.000 litres, for over 25 years.
I know how frustrating this stuff is, you go crazy on it.
I tried a lot of things, really a lot and costed a lot more...
With 5 grams of salt all the weed is gone, your fish (carp sturgeon what ever) will be happy.
As a bonus it will kill also the most viruses and other fish damaging critters, even the bugs stay away.
Your bacteria in your filter system must adapt, so dont throw in immediately 5 grams per liter.
A refractometer is a must have.
Put a bucket somewhere full of salt, get a small pump running into it and let it overflow back into the main stream.
Salt in 25 kg bags can be bought in the most farmer stores, at least here in the Netherlands for 6 to 7 euro a bag.
Most chemicals will work for short periods of time, but it will be "stored" in the fishes body. Salt goes in and out.
A uvc lamp is only for the microalgae to die, the filter will catch most of it, but it decompose before you clean it, so it will be a nutrition for your weed blanked.
Thanks for that and the information, you must like Caviar! Andy was a great pal he is the taller of the two Guys in the picture. The shorter one worked with Andy plus visited to help run the Ruschbahn and like us all was bereft when Andy passed on so unexpectedly just over 7 years ago now.Sorry for your loss.