Good thinking, Sunotorp.
As yet, un-absorbed photons, are still
available photons.

I propose that I set my Lux meter up again, then cover the reflective walls and floor and take a second reading.
I did a li'l 'speriment like that a while back, and was quite surprised at how little difference there was between reflective, and non-reflective chambers according to the light meter.

Alas, I recorded almost nothing at the time, and wetware is not to be trusted, so, I'll have to do it again with a camera.

Even if it's only a few percent gain with 98% reflection, the key word here, is gain.
I'm too under-funded to waste any wee photons.:rastasmoke:

Mahalo for the use of the hall, Moody.

Aloha, y'all
Weeze