Recently picked up an Apogee SQ-420. Not the best, but it was too cheap to pass up. It has charts for different types of lighting and shows a conversion factor of 1.20 for a four bulb T5 fixture, when using 2X actinic, and 2X blue plus. Does anybody know how much different it would be with Giesemann bulbs, 2X super actinic and 2X aquablue coral? Also I know it's not the best for LED, but it has a CF for just blues, does anybody know of a way to ballpark it with AI Primes?


