Ecotech Radion TIR Lenses are now in stock!
 

What is TIR?
TIR stands for Total Internal Reflection. By redirecting more of each LED cluster’s output in a usable direction (in your tank), TIR lenses are able to boost peak PAR levels by up to 45% and total (average) PAR levels by up to 23% beneath the fixture without sacrificing spread or consuming additional power.