The CLPW IS an invasive and isn't recommended for ponds, although because of Canada Geese I battle it in a few ponds. It was used as an example of vascular pond weed sequestering enough nutrients to eliminate algae, either planktonic or string algae.

I don't know of any non-invasive pond weed that would sequester enough nutrients to make as large of a water quality change.

When sending water out for testing, and you want to know the levels of nutrients in the water do it in January/February when the majority of plants and algae are NOT growing. Typically the nutrients that would be sequestered in the plants/algae are in the water column. But due to the cold water temps most plants/algae won't be actively growing. I have seen some FA grow under the ice and in my pond I have seen it get to be 3'-4' long when in the water flow of the winter diffuser. I believe it was Spirogyra.


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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).