Originally Posted by James Howlett
Gotta agree with maimunji. Proper NPK ranges alone don't equal big yields. There's many factors that contribute- genetics, light intensity, Temp, RH, EC, CO2..
Many here will have a hard time believing your numbers if you're attributing it all to something as simple as that.
Any finished bud pics?
No C02, temp was around 28C, RH was about 50ish. Nothing special except good lighting and a balanced feed. If anything I would say that the trichodermia I use (Plantmate drench) is a factor in the yields. I use Yara salts and I use k-rich, fast fulvic and potassium silicate from Nutri-tech. I make my own ph down with sulphuric acid but I also use some citric as well. Another thing might also be is the PH in the root zone. I make sure I have 10% NH4 out of the total N. The other could be the size of the pots, 65 litre or the perlite to coco ratio being 60-40. I use 2x CMH x 1000 watts for lighting with good airflow. Then I just hit the targets, my tap water ppm is also deducted from the formula and 7lbs is what I got last run. I feed every hour for maybe 6secs lights on after week 5 flower and thatís about it. I remove almost all leaf at week 4 flower and I lollipop. Really big heads that way and bigger yields no doubt.