Blanket Weed/String Algae
We have a 4,000 gallon pond with 5 koi. This is the second year for our pond.....we have plants covering about 35% of the surface. Have a waterfall with filter and pump system. Our problem is we are getting an overabundance of blanket weed and string algae and would like to minimize both, without harming the koi and other plant life in the pond.........any thoughts?