THe 2x13 retrofit kit does not come with the reflectors. Without the reflector and with the light sitting so close to the water I had shadows at the front of
my tank and my glosso was growing about 3" tall and toward the rear of the tank. I bought reflectors for the 2x13 and a 1x13 deluxe, built a new canopy
and now run 3x13 front to back on the tank.My glosso now grows horizontal.