Hey just curious, is there definitive growth/quality to be had with the addition of UVB. Don't want to thread jack so maybe I'll start a new one, or if anyone has a link to some info on UVB and bud size/quality/density, etc.Going by lumens per foot theory....
3.5*5=17.5*7000 optimal lumens(per square foot)=122,500 lumens
Going by those measures it looks as though you need a 600 watt HPS(90-95k lumens) + a 400 watt HPS(50-54k lumens).
That said you can still get good results with a HPS at 90-95k lumens
95000/17.5=~5425 lumens per square foot
Add to that a couple UVB(reptile lights) and I am sure you will produce some good bud.... just remember to send me some
-potlike