GoldenSyrup
Active member
Just finished day 6 of flower, and it's mostly looking good. On the whole, I've never had my plants look better than they do under the cmh lamps. At this point I'm positive that the stretch will be significantly less than I'd see under hps lamps. I started flower with ~16" plants. With hps, I'd expect the plants to be ~24" at this point, and they're more like 20". With hps, I'd have expected the plants to hit 30-32". With the C/G's, I'm now positive the current crop will mostly finish at under 24". Next time I may veg to 20" before the flip, shooting for a 30" finish. I won't decide on that until I see how the current setup produces. I've been growing SourBubble for quite some time and usually by mid-week 6, I can give an extremely accurate estimate of my final yield.
The plants are filling out nicely, they just seem SMALL. Usually I veg 9/tray up to 30" before the flip. These won't be that tall at harvest. Only thing I'm not liking at the moment are signs of what appears to be a calcium def. I've been running my nutes(v+b) pretty mild @ 1.0EC, so a minor deficiency wouldn't be surprising. I've upped the feed to 1.2EC, and I'm hoping that's enough to correct it. I'm trying to run as low of an EC as I can in any event.
Here's that nicely filling in field...
View Image
And here's the deficiency. The plants are mostly nice and green, just random leaf tips are showing this. I believe it's a calcium def, but I know that v+b can mimic many deficiencies when it's too weak. Opinions are welcome.
View Image
I'll be back with another update next week...
Hi what is your RH? If you're running sub 40% calcium def is likely to show. Also if you're in a hard water area don't be adding any cal mag or epsom salts otherwise you'll cause lockout. I'm not sure if it's the same in the states but hard water in Europe is mostly calcium and magnesium to buffer the pH.
If the lamps are too close also this can cause a calcium def to show due to transpiration issues and the lamps frazzling the RH directly under the lamps but not the whole area.