Radion Gen 2 With Wide Angle lense

[lxeroxl]

I just upgraded my 2 radions on my 90 to the wide angle lenses from ecotech, i did this because i have a low canopy and the lights sit about 5 inches off the water line, and i was buring corals at 30-35 percent in 20k.

My question is with the new lense's i know i will most likely need to increase the intensty but without a par meter it is hard for me to know how much. does any one know by approxamently how much the new lenses decrease par. should i be going up 20% or 50%?

 

[Jonreefer]

i forget where I saw it. someone was running the TIR and switched to the wide angles and he was running about 40% before and upped it to 70% with the wide angles and the par readings in his photos where about the same with that change.

found it
https://www.reef2reef.com/forums/led-lighting-specific/153024-radion-tir-wide-lenses-worth.html