Question…..did your yield or potency increase after getting said meter? Just curious…Yes, that would work fine as long as you didn't change lights - calibration would only apply to the exact light that calibration was done for, not for lights with different spectra.
Trouble for me was that, renting one here was not feasible (I would have had to rent one from across the US border, and shipping time through customs was part of the rental period). So I bought one.