I used to get this in the pond in my old house. It's basically caused by the sunlight on the water. The best way to fix the problem is to fit a filter but it can be a bit expensive as it will involve wiring, a pump and a filter. Did you put enough barley in? I found it worked really well.
Hi Uffda,Yes the pond has a pump and filter.I keep it well maintained
3 barley bales are in the pond now.
The 28 days are up and no sign of the algea clearing.
I will try Captain Americas advice.......DD helped me look for one today.
So will keep you both updated.
Thanks to both of you x