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 increase total (average) PAR levels by up to 23% beneath the fixture without sacrificing spread or consuming additional power.
The TIR lens incorporates EcoTech's ongoing commitment to innovation and improvement for the benefit of its customers.
A modular upgrade for a truly modular fixture makes the Radion an ever brighter solution for aquarium lighting.
Graph below shows on Left Radion using the current lens and reflector.
On the Right is Radion using the new TIR Lens Kit. Readings were taken over a 30x30 inch area at 12 inches from the light. While many make claims, EcoTech delivers.