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The 2 big differences is the 3.0 doesnt have a button. It's completely controlled on your phone. And the light spectrum is a little different. Slightly lower PAR but the wavelength is supposedly better for the plants. Absolutely no option for a split photoperiod. That's the only thing that irked me about a plant light, but since it was a second light, I cant say it actually affects me that much.Nate3544 said:I was also looking at the Fluval lights. Does anyone have any experience with the Fluval plant 2.0 and the 3.0. I was wondering which one is better or if they aren’t that different.