PAR Requirements

[gorillaglueaaron]

That is for atmospheric co2... around 400ppm. I wouldnt say its the max but for an 18/6 I would say that fits the bill.

Although I'm pretty sure anything above 850 has almost no effect.

 

[Aqua Man]

Although I'm pretty sure anything above 850 has almost no effect.

Depends on plant, stage of growth, temps, humidity, nutrients etc. And especially co2.

 

[3 balls]

I'm asking about my ideal PAR reading under DE HPS in flower.

 

[3 balls]

Thanks guys. I think you confirmed my assumed range. I got confused when the enrichment ppm got intertwined.