The viparspectra I shared above is only $10 more and IMO a much better light
Here is the mars PPFD map at 14"
View attachment 4792146
And here is the Viparspectra at 14"
View attachment 4792147
For a good yield, you want a of map of atleast 600
The mars is made for 1.5'x1.5' flower
The viper is made for 2x2 flower
The viperspectra has a good efficiency at 2.7 umol/j
The mars doesn't even list it that i can find.
The viper uses 150w
The mars uses 100w
Overall, the viper is a better light, with better bang for your buck.