Dec 28 (Day 33)
Tenth feeding exactly 72 hours after the previous. 3.6g/gal, 500ppm total (340 + 160 water). Runoff ppm: 950-1000. The plant looked like this before watering:
I have replaced the top light (9.5w Cree A19) with a 18w Cree PAR38 flood. Total 56w -- 18w/sq ft for the partially filled 4sq ft space. (The plant is touching the front/rear walls. But, I'm calling it 3 sq ft because it's relatively short. Not much vertical plant to cover with light.).
The color balance is four 9.5w 4000k and one 18w 3000k. Cree doesn't make a cool-white PAR38. I haven't vegged with a PAR38 before. Hopefully doubling the warm (from 9.5w 2800k to 18w 3000k) will be ok.
The PAR38
flood can be intense. I have it 8" from the top. That's it's "focus" (shining it against a wall to see the coverage and uniformity). I like to use these in flower, at a 45-degree angle around the top. They take up less space in a short tent that way. (The
spot has a focus of around 14-16". I don't use spots very often. Maybe in my tall tent if I want to supplement from a tent leg and the distance works better.).
Regarding sex
The pistil in the previous post seems to be coming from the
other side. But, there's no calyx formed there. It seems to come out of a recess in the crouch. I was trying to look at it -- and then saw this:
That's the calyx I photographed from the other side. So, I think my dream still came true. I'll keep watching it. I see more calyxes forming on outer branches.
Testing stronger nutrients
I was going to try stronger nutrients. But, now that it seems to be female, I don't want to do it. If it were a male, I would feed it one last time at 4.5g/gal to see if it burned. It seems to be doing well at 3.6-3.8g/gal, which is a tsp/gal. (335-375ppm, actually measured, excluding the ppm of the water.).
Soil pH
I tested the soil again, 18 hours before feeding: ph 6.8.
1 hour after feeding: 6.5
The soil isn't as acidic as I'm used to feeding my more organic Grow More
Sea Grow (plus organic supplements). I'm used to seeing 5.8 after feeding (or 12 hours later) and 6.8 when it's dry. It must be the absence of organic nutrient sources.
If I did this again, I might reduce the dolomite in my soil. It might be fine without any (since the Pro-Mix HP has dolomite). But, it doesn't seem to be a problem this way. It should be beneficial in flower to have a bit higher pH.