The corrugated material does not come in Black. However I'm just going to use a larger piece of PVC pipeDo they make that material in white? Because the ARID reactor guy said white will reflect light back into the chamber, where black will absorb it.
And how would you implement it? You'd have to cut holes in front of every led, making the led's still almost in contact with the reactor. A clear type of buffer would seem to work better. But this is just a hypothesis.
