VEG or BLOOM stand on lamp

Veg for veg and veg+bloom when flowering.........simple!

Good advice below regarding Photone app. however it is not accurate with out calibration. so use it with that in mind, It will be stable and consistent in its reading on the device it is installed on and just that device, but its not a real or accurate PPFD measurement, it can get fairly close when calibrated but you need a good tool to do that. It is using a fancy equation to covert Lux to PPF and DLI. For the real readout that not calculated you need a quantum senor and they are not cheep. I would use the light in its max setting with bloom and grow enabled. That style of light is not pulling 1000W from the wall. its a theoretical amount of watts the LED didoes can handle but they are never ran at 100% as they would burn out to fast. That light might be pulling 100-150W in reality. Its shit marketing when they do that. If the plants are not getting burned and you have nice internode spacing keep it at the height its at and use LST and HST to control the height of the plant. obviously move light closer if node spacing is stretched to much. and away if its to cramped. Good Luck!

In the vegetative stage, you need between 600 and 1000 ppfd; you can measure it with the app mentioned by the colleague below. It's not necessary to switch it to Bloom. I also think that between 50 cm and 60 cm is fine. Don't bring your lamp too close or your plant will get damaged.

You don't want it to be too close that your plant starts getting heat damage. Try to keep your DLI around 40 and make sure your PPFD is under 1500 (absolute limit) You can check these by downloading an app such as Photone. Remember that you should try to keep all your plants (of around same age) at the same height, so raise the other one accordingly. Good luck with the rest of your grow and ask your heart out to learn as much as possible during a first grow.