Pond Boss Forums AQUATIC VEGETATION Identifying plants What is this nasty stuff and what kills it?

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Looks like a chunk of an alfalfa hay bale floating in the water.

The top photo resembles Chara (an algae). But, the bottom photo somewhat contradicts my initial hunch.
A sharply focused close-up photo of a single strand held in your hand, or against a contrasting backgroundm would be most helpful.
Also, does the stuff smell musky (skunky) when crushed in your hand?

I agree, the top does look like Chara, but the bottom pic looks more characteristic of a "Pondweed" sago perhaps, but you really need a better pic to be sure.

I shall take and post a better picture ASAIGATI.

Here is a close up.

It has no particular odor when crushed.

BH, see if you can get a single strand on a white background, like laying it on a sheet of computer paper. That way it'll be easier to tell if the leaves are alternate or opposite, and give a better idea of the stem structure.

Something like the pictures in this thread and it's nice to have something in there of a known size, like the quarter.