I am currently setting up our lab's behavioral space to run the open field test in rats, and I am trying to figure out how to set up lighting to evenly illuminate the open field chamber (a 90 cm x 90 cm box).

For now, I have hung two light fixtures (like these: https://www.amazon.com/gp/product/B07T6Y5T7H/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1) from the ceiling and positioned the light fixtures so the light reflects off the ceiling and into the chamber, but there are still shadows on the floor of the chamber, and the light intensity appears low. I would like to know 1) how other people set up their lighting and 2) the light intensity (in lux) in the open field chamber, if possible.

Thank you all in advance!

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