Sanity check for my flip-to-flower parameters

Heywood · Apr 24, 2022

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Hey all. Hoping you guys can take a look at where I am at now that I am just hitting 2nd week of flower and make any suggestions to get dialed in.

Base info:

2 plants growing in FoxFarms Happy frog
Spider Farmer SE5000 LED (upgraded)
RO water always PH'd to 6.3 - 6.5 after nutes
Planted in 7 gallon fabric pots
Organic liquid nutrients Mission Fert line
Light doses of CalMag Plus used during veg, but not in flower
MammothP lightly dosed throughout grow (1ml per 2 gal)
MykosWP used in every watering
Versity Bacillus Blend used in every watering
Generic Kelp/fish fert used in every watering
SNS209 systemic organic pest prevention fed first 5 feedings then no more.
Mission Bloom nutes I am using are nothing heavy. About 755 PPM going in.
Room temps maintained at 75-80F and RH maintained at 45 - 55%
Plants are healthy. No burns and only 5 or 6 gnats caught on the sticky traps in 9 weeks.

So I downloaded the Photone app today. Apparently I got the most recent Beta version of it to where you don't use a light diffuser. I put one on not knowing that, and the app detected it and told me to remove it.

So here's the numbers I came up with:

Spider Farmer hanging at 30" above the plants at 75% power
Eyeballing it, only a small number of leaves praying up towards the light. The rest are laying nice and flat.

Through Photone:

PPFD at the canopy is 220
DLI at 12 hours is 9.8
LUX is 13000
Light is 3300K
Leaf temps with my IR gun - 78F

If you have recommendations against the above, I would love to hear it.
Also, now that I am in flower, would you recommend I feed using nutes at every watering, or should i maybe do more like a feed, feed, water, feed, feed, water cadence?

Appreciate the look-see and any suggestions.
Here's the plants after medium defoliation yesterday.

steamroller · Apr 24, 2022

I think you are fine since this is before stretch, but all numbers should be higher in flower .
I would start with lowering the light to the plant after stretch .
Others will chime in with better info then this hopefully .

Heywood · Apr 25, 2022

Ok ... no replies with numbers from you guys "Yesterday" so I had to research. :)

Watching the video of Dr Bruce Bugbee, I cranked up the power to 95% on my SE5000 and dropped it down to within 20" of the plants and then re-measured using the Photone App "Today" to see what kind of figures I would get.

------------Yesterday................ Today............... Ideal
PPFD--------- 220....................... 530 .............1000 - 1500
DLI (12 hr)---- 9.8 ....................... 24 .............. 30 - 45
Leaf temp-----78 ....................... 82 ............... 72 - 86

I am pretty surprised that I can't really get anywhere near the ideal PPFD range with this light. Yeah, I had 5% power left to push to 100% and Spider Farmer indicates hanging as close as 8" during flower, but I think that would be a catastrophic failure to the plants.

After I took those readings, since I am only at the start of week #2 of flower, I put the power at 90% and backed the distance off to 24" to let them stretch into it a bit - good call @steamroller

So anyway, I will keep an eye on the leaves and see if they want these lights closer or further by how they react to what it is now.

Sanity check for my flip-to-flower parameters

Sanity check for my flip-to-flower parameters

Heywood

steamroller

Heywood

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