I believe the T8 led is 20 watts spread over 48" is it not? btw I am sub'd to HeiloReigns with great interest.Kinda pricey? Did you read my explanation?
Purp, you should know that HeiloReigns has a fab flower going under 28 total led watts. My own grow is coming along great with ~ 100w
Bottom line, don't underestimate what low watt leds can do