Im getting mixed info on how high the lught should be now this chart shows to have a dli of 20 and this is 40 inches from the top of my plant should i lower my light i also have co2 on a sealed tent @1000 ppm
In my experience the materials companies put out are basically propaganda. Download the Photone app on your phone or tablet. It’s a game changer. You can put in the number of hours your light is on daily and it’ll calculate DLI for you. I started off using a VS 2000 and used their ppfd chart and inverse square law to calculate the amount of light I was getting. I was waaaay off. Get photone.
You’ll never have to wonder how much light your girls are getting. Dialing in your lighting has never been so easy. Like I said, it’s a game changer. Good luck with your grow.