The frequencies used in all of the nih.gov reports I looked at were 660 and/or 850 nanometers, which are also the common frequencies for commercial red light therapy lamps. (most use both frequencies) Perhaps not coincidentally, those are the two most common high-infrared LEDs on the market.
I bought a bunch of LEDs and a power supply with the intent of making a loose sleeve I could fit over my pump tube. That way I could perforate the sleeve to allow for some air flow. The larger LEDs pull 3 watts each. I have a thermocouple and meter to monitor temperature, but I wanted provision to get rid of waste heat if necessary.
Unfortunately the project got stalled, but hopefully I can get some workshop time in the coming months.