The gopro magenta dive filter for dual hero system is ideal if you are looking to film in fresh water lakes and reservoirs dive filter for standard housing designed for use with the standard housing and blackout housing the magenta dive filter provides colour correction while capturing footage at depths of 15 to 70 45m to 213m its ideal for freshwater lakes and reservoirs or salt water that appears green due to algaethe filter presses into place for quick tool free installation and