We used to use the red light force filters on the 140 and 170 for deer 15-20 years ago.
great for walking tracks and close in stuff. little red energizer for walking, cheap compared to then quoted gen night vis at 25k.
otherwise we used 110 - 130 watt bulbs for every thing else which were bloody bright for the time, rabbits seemed to hold better compared to the 100watters
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