Two small yellow buoys will soon be seen bobbing up and down in Stratford's Lake Victoria.Starting Monday, the city will test the new innovative devices in an effort to improve the quality of the lake's water. One buoy will be placed in the water just east of Tom Patterson Island, and the other will be located west of the Waterloo Street bridge."These buoys, known as Equilibrium Modulating Fluids Devices, are designed to help improve water quali…