After playing with the new lights, I've set them to 14" above the canopy which provides:
PPFD: 700-ish
Lighting: 20/4
DLI: 40 or so... maybe a bit over.
@Zammi_official, Thanks. Having fun sorting out pH for my grows at the moment. Biggest problem with living on Mars is getting the supplies to deal with issues reliably / timely.
😬