Avoiding Too Much LIght in Flower with Co2-- PPFD/LUX Question

I would just warn to be careful with those high numbers . I have a similar set up in a 3 x 3 using 500watts 3000k quantum boards . Last grow I hit them with 1100ppfd in late flower . It stressed them out and one turned hermi pollinating the rest. This time round I'm maxing out at 800 ppfd and they are swelling up nicely with no stress . You can go higher with CO2 but If you have the lights turned up to max I thinks it's important that the the hanging height of the lights are quite high (30 inches or more ), as LEDS can be super intense . 1500 ppfd isn't worth the risk imo I'd probably go as high as 1200 ppfd with CO2 . But that's just from my experience , you may find others have a different opinions. Read the plants they will tell you if they are getting to much light by yellowing at the top or burnt yellow tips . Seedlings 250 to 300 ppf Veg 400 to 600 PPF Flower 600 to 900 PPF That's the numbers I go by . Obviously you can go higher with co2 , just try and avoid stress on them. Good luck 👍