turn on the tank light.
turn off the lights in the room your tank is in.
turn off flash.
then do this trick
http://www.monsterfishkeepers.com/forums/showthread.php?t=34014
turn off the lights in the room your tank is in.
turn off flash.
then do this trick
http://www.monsterfishkeepers.com/forums/showthread.php?t=34014