Quantum PAR Meter Full-Spectrum High Precision PPFD Tester for Photosynthetic Activity of Indoor and Outdoor Plants 400-700nm Light Lux Tester

That’s what’s up man. Heard great things about it that app. I use this meter and it has served me well. https://a.co/d/0c5sCG9L

You need to get a proper lighting reader. Quantum PAR Meter Full-Spectrum... https://www.amazon.com/dp/B0BTYW7SDP?ref=ppx_pop_mob_ap_share You need to get bigger pots. I use 7 gallon fabric ones off amazon. You need a tent to prevent any light loss and you need to get a better light in general. VIVOSUN VS2000 LED Grow Light... https://www.amazon.com/dp/B08GNZ7M74?ref=ppx_pop_mob_ap_share

I use this to get my light reading exact. https://a.co/d/2hT6cJs I also use the general hydroponics trial pack to add to my water. https://a.co/d/fF7vZc1 Might even consider a taller tent also and trim off a lot of the big fan leaves that block any light from the lower buds. This pic is from before I defoliated it for a third time.

Something this could be helpful - I suspect you need different lights. Doing your first grow I would suggest using th. vivosun ecosystem - more plug and play https://a.co/d/3QvRzOf