CRiSPrGrowcommentedweek 105 years ago
hey there, hope i answered your question ! learn more about VPD here : https://pulsegrow.com/blogs/learn/vpd this will help you level up . Anything else you need , just let me know 👊
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Double Grape S2 P2
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5Indoor
Room Type
LST
weeks 4-5
Defoliation
weeks 4-5
Soil
Grow medium
11 l
Pot Size
Photos & Videos
D57: Getting thicker.
D57: Top down.
D57: Keep growing bud.
Grow Conditions
Week 9
Flowering
20.32
cm
inch
Height
20 hrs
Light Schedule
10+ conditions after
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Nutrients
ml/l
ml/gal
tsp/gal
1+ nutrients after
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DAY 58: REGULAR WATERING. LIGHTS MOVE IN.
- Watered with 1.5 L of "standard mix." (See Day 53.)
- Lowered lights to 16-18 inches above the canopy. Moving down every few days until it gets to 12 inches above the canopy or signs of light stress develops.
- I still have some problems with nutrients. Hoping that slightly heavier waterings, with drying in between, will help distribute any hot pockets.
DAY 59: NEW FOLIAR FEED
- Foliar fed with a mix of Spray-N-Grow. (Spray-N-Grow.com)
- Mixed according to label directions. Included a mix of their Spray-N-Grow (micronutrients), BIlls Perfect Fertilizer (6-11-5) and Co-Co Wet.
- Removed from the grow room. Sprayed with a fine mist of solution. Allowed to dry before placing back under lamps.
DAY 60: WATERING AND LIGHT ADJUSTMENT
- Watered with 1.5 liters of the standard mix plus about a teaspoon of molasses
- Light lowered to no less than 12 inches above the plant.
- According to reviews and the manufacturer, this height should give me just under 1,000 PPFD in the center of the grow area.
- I will be watching for signs of stress from too much light.
DAY 62: WHOOPS, I'M USING A LITTLE TOO MUCH PRODUCT. VPD DISCUSSION
- Double checked the frequency of use on the Mammoth P website. It's supposed to be applied once-a-week and _not_ every watering.
- I am still checking the schedule for Fish Sh!t. Their online instructions are not as clear as they could be.
- Watered with 1.5 liters of pH'd water only. pH adjusted to about 6.3.
- I can't say that I've seen a major change from the single foliar feeding of Spray-N-Grow, but don't know that I should expect much in such a short time.
- I am adjusting the VPD "upward" a bit. From what I've read, lowering the VPD increases the transpiration rate of the plant, increasing the speed of growth at the same time.
- For mid-to-late flowering, the suggested VPD is 1.2-1.6. My VPD has been running at about 1.37.
- My current target is from 1.40 to 1.55.
- After lowering the RH the VPD is now 1.53. I'll track it for a few days to be sure that it is stable.
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1Similar Diaries
Grow Questions
BladeCutterstarted grow question 5 years ago
The leaves at the top of the plant seem to be curling up. My first guess is that there is too much light. I recently moved my light down to 12 inches above the canopy. The PPFD should still be under 1,000, but I don't know what else could be causing it. Please help. 🙏
Solved
Leaves. Curl up
Setup. Lighting
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CRiSPrGrowanswered grow question 5 years ago
it's mostly down to the temperature i suppose, actually the relationship between the temperature and the humidity regulates the stomatas on the leafs, if the VPD is not where it should be the stomatas can open or contract in a way that bends the whole leafs. Lots of new words, basically stomatas are the leaf pores, VPD is vapor pressure deficit. Hope this helps ! 🚀
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240sxOGcommentedweek 25 years ago
I think it’s the watering part even tho your not overwatering you’re still watering it every day so that’s overwatering let it dry it needs an oxygen break before it gets watered again let it decide when it wants water not you ..
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BladeCuttercommented5 years ago
@240sxOG, I agree. I'd rather water every other day. This time I have a very light soil mix and will water in slightly greater amounts, but try to keep it to every other day.
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Fruitgrowercommentedweek 105 years ago
Also adding coco to the soil is not a bad idea. It does improve drainage, coco doesn't hold onto water very long. 👍🌱Looking like lovely buds there. And your leaves are fine for this stage of growth, it is normal for them to do this when ripening
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BladeCuttercommented5 years ago
@Fruitgrower, thanks for the reply. I harvested both plants in the garden earlier this week. I'll have a full harvest report soon, but I'm hoping for about 25 g per plant dried. That would be about 14% more fruit from these plants than my previous organic garden. Always learning.
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PrairieFrostGrowcommentedweek 125 years ago
Nice buds on this girl as well!! Should be nice and sticky in the grinder:)
11 to 12 weeks is what I had with Mephisto Skywalker and my Sweet n Sour looks like she will be in the 11 week range as well.
Enjoy the smoke Boss!!!!!
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BladeCuttercommented5 years ago
@PrairieFrostGrow, I harvested my last Double Grape about a week earlier and I think that was too early. This one I let it run until the plant was full of fall colors. It is drying right now, but should be able to measure dry weight tomorrow. I'm hoping for over 28 grams/plant. I may be a bit short of that.
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Mr_Weeds_Autoscommentedweek 95 years ago
Nice looking buds
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BladeCuttercommented5 years ago
@Mr_Weeds_Autos, thanks for the kind words. If you have comments or questions, feel free. I like to chat.
After a long time as a small hydro/photo grower (strickly personal use and then sometimes short 😕) I've moved to organic and autos. What a change. I used to spend all my time trying to control the growth, height in particular. Now it's all about getting them as big as I can. Maybe I should really follow Mephisto's advice and basically grow them as SOG! (From their 2018 Strain Guide: Best Method for overall high yield - 9 per 1,2m x 1,2m sq in 15 Liter pots) I probably should crowd four into my 18"x18" (~0.4 m sq)!
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