I'm still building my infrared night vision develop by inspection system for tri-x 8x10.

I have the goggle which can see infrared light. The idea is to develop each sheet in a glass tray with an infrared light source below the tray aiming up at the film. The result would be like looking at the film on a light table through the goggle. If it works as expected I should be able to see every nuance in the film as it develops. I have found what appears to be a good infrared light source, it contains a small bank of infrared led's. The guy on ebay says it gives off no visible light unless you look directly into the led you can see a very faint red glow within the leds. Is that faint glow going to be enough to fog the film or will the film even see it? I'm hoping it will not see it. I don't plan to leave the infrared light source on the entire time, just at certain intervals. The only way to answer this may be to do a fog test of some kind...