Using the barley straw does work. The North American Lake Management Society had several presentations on the results this year during their symposium.
The earlier you place it the better results can be anticipated. The straw does not absorb any of the nutrients, but it is the enzyme that is produced as the straw rots that does the job.
So get that straw out, put it loosely in mesh bags and stake it to the shore line. If you can place it in a location that ther is flow, that woks even better. It does have to have air to work too, so do not sink it with bricks.
Good luck!
