OK, thanks for that. Yes, I typically use those singlemode open can diodes which are doing ~380mw if memory serves. The erasing works on the strontium paint, but it is painfully slow and very visible, of course. This kinda takes away “the magic” of erasing which is why I was thinking that lots of LED red worked into a show might be less obvious. The only other option I can think of is patience.
-David