45 degree Lens is used to deliver PAR deeper than the 60 degree lens and the convex lens. Common uses for this lens are Coral Reef tanks 8 feet (2.44m) and deeper as well as shark lagoons and open ocean systems deeper than 14 feet (4.27m).
45 degree Lens PAR Testing was completed over a 10 foot x 8 foot area (3.05m x 2.44m). Readings were taken at 1 foot (30.48cm) increments on the x and y axis. Each lens option was tested at the most common heights in order to maximize the usefulness of the testing.
PAR testing was conducted using an Apogee MQ-200 Quantum Sensor set in the electric mode. The unit measures par in PPF units (?mol m-2 s-1). 3 readings were taken at each point and the average was used as the reading in the final graphs. Information was recorded in Microsoft Excel and converted into plots. 2 plots for each test show the overhead distribution (Coverage area) and the side view surface plot showing the PAR values achieved.