Experience with Mars Hydro FC1500EVO?

I don’t have the same light specifically, but I would recommend measuring the PPFD/DLI for yourself to see what intensity you like at what height. I use the Photone app on my phone. Works well for me. The app was free when I started using it, but I have heard they are charging for certain features now. Regarding upside to hanging lights higher…. Last run my plants stretched so high I had to rework my tent setup. Exhaust fan and carbon filter moved from the top of the tent to outside the tent and lights got mounted as high as possible, right under the mounting bars. When getting set up for this grow I checked my PPFD/DLI at the soil level before popping seeds and it was pretty much perfect for starting seeds (208 PPFD/18 DLI) and I hadn’t adjusted the lights at all from my previous harvest. Lights were mounted high and cranked up for flower. It’s been almost 2 months and I still haven’t adjusted the lights at all. What I’m finding is leaving the lights this way allows the plant to grow into its next comfortable PPFD/DLI range on its own. And my environmental conditions have been more stable than ever this grow. Recommend giving it a try👍👍

@MarsHydroLED is actually the leader on the market, providing quality lightening equipment at a fair price. My advice is to get a PAR meter for fixing distance and intensity.