Yeah the light fixture was bowing as it was originally made from 2mm thick, 1m long painted steel flats. I have since reinforced them with Aluminium angles and there is now no bowing:
The name of the tent can be found in a few of my previous posts, I believe they are UK only...
I have had the lowest heating bills ever this winter.
When it's -2C outside the house is between 14-18C just from the heat of my grow (water cooled 3600w vented into the house). I turned off my lights for 2 days while I was flipping a tent a couple of weeks back and... DAMN it was cold without...
Yeah, I explained a couple of pages back that this pheno is very fast flowering. Her sisters were done in 55-60 days but this particular pheno has buds look ready at around 40-41 days and a good percentage of trichomes are turning amber around 45. This is my third time running her and so far...
Not sure if anyone's interested but here's my defoliated tent at 30 days since flip. Have also included day 20 (defoliation day) as a comparison.
Likely they'll get the chop around day 45. Looking promising so far.
This particular pheno does well for yield but only if you let her veg to have a nice big frame. She stretches about 30% and then starts to flop over so needs a lot of support and doesn't take up much extra space. Not spectacular yields as the buds are not rock hard but there are plenty of bud...
I have a G13 Pineapple Express pheno (C99 x Skunk #1) which is done in 45 days from flip. At around 40-41 days the buds are filled out completely but trichomes not cooked.
The pics I linked to on the first page are all cuts of that pheno. All her sisters needed an extra 10 days but that one was...
This is quite an interesting subject. According to your formula I had already maxed out my yield per sq ft with 1200w of COB lighting per 8x4 (870 umol/s ppfd). On this run I added another 600w so I have 1800w per 8x4... am I going to see any increase in yield? I am at 1400 umol/s ppfd now...