The customer mailed me a filled out support ticket, so here it is:
Strain; White Widow from clones (which I produced from seed)
Soil in pots,
System type? (what?)
PH of runoff or solution in reservoir? the only ph measurment I do is in soil and turns out 7,5 (although cheap ph meter)
What is strength of nutrient mix? EC, or TDS; This is what I do:I
mix 2,5ml of CANNA PK13/14 and a teaspoon of organic fertillizer (from
see weed. it is described as the mother of all fertilizers!!
N,P,K,Fe,Zn,B,I,Br,Cu,Ni,Mo,Co,So,Si,Al and many many other things!) in 5 lit of water. I apply this once a week. I usually water every 2-3 days.
Indoor; closet 1,20mX60cmX30cm
Light system, size? 80 watts HPS in the middle of U-shaped scrog,
2X20watts clf at each end of the U-scrog, 400watts HPS on top of
everything (but only for a couple of hours)
Temps; Day 30-38oC, Night ~20
Humidity; Day, Night N/A
Ventilation system; Yes, two brushless fans 10cm blowing air out and a 10inch bathroom ventilator also blowing out
AC, Humidifier, De-humidifier; NO
Co2; NoOne thing to point here is that i was
pretty happy with my grow before installing the 400HPS and fans. I know
it wasn’t the bigest possible grow but it was running even cheaper than
the standard 400/600watts setup.
So, my only
question is about how long can my girls tolerate 38-40oC without
suffering heat stress so that I can boost my yield a bit.