Ultra G13 #2 recirculating Rockwool Test

DISCLAIMER START EC Value on weekly page is the actual value, my EC meter was not calibrated and gave extremely false values, that's why it went so bad, corrected it on the weekly page when I noticed it, the EC value in the comment is wrong, the rest is correct. DISCLAIMER END Sprout ~21:00 on 22.01.2025, counted as day 1. The seedling was really really light hungry! I started with 300 PPFD and it stretched and stretched until I increased it to 500 PPFD mid week. The seedling is growing good and the fact that it is so light hungry gives me a good feeling :) Values are average of the day. DATE - EC(us/cm) 20250222 724 20250223 734 20250224 734 20250225 738 20250226 764 20250227 873 20250228 915 DATE - PH 20250222 6.28 20250223 6.18 20250224 6.20 20250225 6.21 20250226 6.22 20250227 6.32 20250228 6.27 DATE - ORP (mV) 20250222 -44 20250223 -50 20250224 -52 20250225 -54 20250226 39 20250227 367 20250228 88 DATE - °C - RH% (Tent Temp/RH) 20250222 21.5 53 20250223 21.5 53 20250224 21.1 54 20250225 21.5 55 20250226 22.9 61 20250227 22 51 20250228 18.7 53 DATE - °C (Reservoir) 20250222 21.6 20250223 21.7 20250224 21.6 20250225 21.7 20250226 22.1 20250227 21.3 20250228 21.4 DATE - CF 20250222 7.24 20250223 7.34 20250224 7.34 20250225 7.38 20250226 7.64 20250227 8.73 20250228 9.15

DISCLAIMER START EC Value on weekly page is the actual value, my EC meter was not calibrated and gave extremely false values, that's why it went so bad, corrected it on the weekly page when I noticed it, the EC value in the comment is wrong, the rest is correct. DISCLAIMER END Plant is doing fine, like its predecessor it is a self spinning plant growth rate is also very similar to the one before, just a little bit slower but not much. The plant is really light hungry, stretched a lot until about 500 PPFD at the start of week 2, did not expect that. Will probably top mid next week to have 8 branches total to train. Increased EC over the week, planning to reach ~1.7 by the end of next week in slow steps. Values are average of the day. DATE - EC(us/cm) 20250301 1005 20250302 1084 20250303 1231 20250304 1328 20250305 1361 20250306 1436 20250307 1433 DATE - PH 20250301 6.19 20250302 6.19 20250303 6.15 20250304 6.12 20250305 6.13 20250306 6.13 20250307 6.13 DATE - ORP (mV) 20250301 21 20250302 27 20250303 119 20250304 150 20250305 102 20250306 99 20250307 83 DATE - °C - RH% (Tent Temp/RH) 20250301 20.0 53 20250302 22.4 44 20250303 22.3 42 20250304 22.4 40 20250305 23.6 48 20250306 22.4 44 20250307 22.8 47 DATE - °C (Reservoir) 20250301 21.6 20250302 21.8 20250303 21.6 20250304 21.7 20250305 22.0 20250306 22.1 20250307 22.1 DATE - CF 20250301 10.05 20250302 10.84 20250303 12.31 20250304 13.28 20250305 13.61 20250306 14.36 20250307 14.33

DISCLAIMER START EC Value on weekly page is the actual value, my EC meter was not calibrated and gave extremely false values, that's why it went so bad, corrected it on the weekly page when I noticed it, the EC value in the comment is wrong, the rest is correct. DISCLAIMER END Day 18 time lapse footage is for some reason limited to 2 images, nothing else was saved.😑 Increased EC to 1700 as planned. RH is to low but it is how it is, should actually increase nutrient uptake due to higher transpiration rate. Topped at day 19, also changed the light from the ViparSpectra P600 to the ViparSpectra XS 3000 Pro, in addition I turned on the Mars Hydro Adlite IR16 (2x8W Infrared). Removed some fan leafs to get more light to new nodes on day 21. Compared to my previous Ultra G13 grow this one continues to grow slower, in the previous week the difference was minor, this week tho it is significant, roughly 1/2 in size. The plant shows no signs of stress or lack of nutrients and is growing, just slowly compared to the one before. The question is, is it due to lower temperatures and RH, or a different seed OR my best guess all in rock wool instead of full on hydro in NFT. Values are average of the day. DATE - EC(us/cm) 20250308 1425 20250309 1417 20250310 1458 20250311 1571 20250312 1695 20250313 1692 20250314 1713 DATE - PH 20250308 6.13 20250309 6.13 20250310 6.13 20250311 6.10 20250312 6.08 20250313 6.09 20250314 6.11 DATE - ORP (mV) 20250308 72 20250309 65 20250310 72 20250311 95 20250312 78 20250313 68 20250314 57 DATE - °C - RH% (Tent Temp/RH) 20250308 22.1 36 20250309 22.0 43 20250310 22.8 42 20250311 22.0 46 20250312 22.1 41 20250313 22.7 39 20250314 23.3 38 DATE - °C (Reservoir) 20250308 21.9 20250309 21.5 20250310 21.8 20250311 21.2 20250312 20.8 20250313 20.7 20250314 21.2 DATE - CF 20250308 14.25 20250309 14.17 20250310 14.58 20250311 15.71 20250312 16.95 20250313 16.92 20250314 17.13

DISCLAIMER START EC Value on weekly page is the actual value, my EC meter was not calibrated and gave extremely false values, that's why it went so bad, corrected it on the weekly page when I noticed it, the EC value in the comment is wrong, the rest is correct. DISCLAIMER END The plant keeps growing super slow and doesn't like "high" EC, after the Increase in EC last week it got stunted and a couple days later started to show tip burn. Really really frustrated and if this one was in my usual setup I would have tossed it out of the window. New growth after topping is also growing EXTREMELY slow. Did some defoliation to get light to lower nodes but ya whatever the plant doesn't care and doesn't want to grow. Unsure if it is due to this pheno, the new setup, the new light or whatever, to many variables to definitely say. I see this grow as a big experiment from now on and don't expect anything anymore. Added some Universol Yellow (high P) after lowering EC due to tip burn. Changed the light to my old one the SP3000 to see if the higher amount of far red is helping it to stretch. Plant started to flower properly mid week so I'll start to mark it as flowering starting next week. On one leaf there is a bud starting to form. Values are average of the day. DATE - EC(us/cm) 20250315 1696 20250316 1630 20250317 1433 20250318 1406 20250319 1398 20250320 1323 20250321 1350 DATE - PH 20250315 6.09 20250316 5.94 20250317 5.58 20250318 5.67 20250319 5.68 20250320 5.71 20250321 5.70 DATE - ORP (mV) 20250315 49 20250316 40 20250317 80 20250318 63 20250319 51 20250320 30 20250321 45 DATE - °C - RH% (Tent Temp/RH) 20250315 23.8 43 20250316 23.2 37 20250317 23.2 43 20250318 22.9 43 20250319 22.7 53 20250320 22.8 48 20250321 23.2 44 DATE - °C (Reservoir) 20250315 20.9 20250316 21.1 20250317 19.4 20250318 18.6 20250319 18.9 20250320 19.2 20250321 19.0 DATE - CF 20250315 16.96 20250316 16.30 20250317 14.33 20250318 14.06 20250319 13.98 20250320 13.23 20250321 13.50

DISCLAIMER START EC Value on weekly page is the actual value, my EC meter was not calibrated and gave extremely false values, that's why it went so bad, corrected it on the weekly page when I noticed it, the EC value in the comment is wrong, the rest is correct. DISCLAIMER END Plant grew a little this week, is still way to small and also full on in bloom. Drastically increased distance to the light from 30cm to almost 60cm, I always used to do that in previous grows but for some reason thought I had to do 30cm this time !? could also be a reason it didn't grew as usually. The mutation I found on leaf grew bigger. Will move the plant some when next week in to a smaller plant since it will not grow much bigger anymore. Added a new light to the tent, the Kingbrite P55 320W, when the plant is moved it will be back under the Mars Hydro SP3000. Switched to 24h light on the last day. Values are average of the day. DATE - EC(us/cm) 20250322 1368 20250323 1390 20250324 1394 20250325 1422 20250326 1459 20250327 1459 20250328 1512 DATE - PH 20250322 5.75 20250323 5.79 20250324 5.82 20250325 5.84 20250326 5.90 20250327 5.90 20250328 5.91 DATE - ORP (mV) 20250322 26 20250323 180 20250324 95 20250325 85 20250326 67 20250327 68 20250328 61 DATE - °C - RH% (Tent Temp/RH) 20250322 23.4 48 20250323 23.9 54 20250324 23.3 56 20250325 23.9 53 20250326 22.7 61 20250327 23.2 52 20250328 24.9 46 DATE - °C (Reservoir) 20250322 19.4 20250323 20.3 20250324 20.4 20250325 20.3 20250326 20.0 20250327 19.4 20250328 20.5 DATE - CF 20250322 13.68 20250323 13.90 20250324 13.94 20250325 14.22 20250326 14.59 20250327 14.59 20250328 15.12

DISCLAIMER START As already stated in previous week comments my EC reading was totally off, this includes CF. It showed about 1500µS/cm when it was actually about 3000µS/cm. I did not calibrate the EC probe since I've bought it and used it 18 months ago, because I thought EC calibration is not really necessary, I was wrong. correct EC/CF values are from 2025-04-01 on wards. (no april fools joke) DISCLAIMER END Moved the plant from the 120x120cm tent to my usually used 120x60cm tent since the plant will not grow bigger anymore, that is also when I noticed the false EC value due to the monitoring setup in the 120x60cm tent showing the high value after I moved solution from one tent to the other, which I double checked with EC calibration solution. Drastically reduced EC from previously about 3000µS/cm to ~2000µS/cm Plant is growing just fine now but the damage is done, looking back at week 2 when I did "1700µS/cm" which pretty much equaled real 3400µS/cm it is kind of crazy that it even did as good as it did, would have imagined worse with a value this high. This also rules all genetic, light etc. etc. possibilites out for me, I was pretty sure the error was on my end that I missed something and I am very confident to say it was the super high EC value. I already set up a new system in the 120x120cm tent and will transplant the small "Permanent Jealousy XL Auto" seen in the timelapse in to that some-when next week, a "Red Gorilla Girl XL Auto" is also going to go in there but as seen in the timelapse these seeds kinda don't want to, the first didn't do much beyond sprouting and the second one is also super fragile and slow, stay tuned for that diary. Values are average of the day. DATE - EC(µS/cm) 20250329 1549 (false value) 20250330 1554 (false value) 20250331 2449 (false value) 20250401 1940 20250402 1949 20250403 2000 20250404 2010 DATE - PH 20250329 5.92 20250330 5.90 20250331 6.14 20250401 5.97 20250402 5.98 20250403 5.97 20250404 5.98 DATE - ORP (mV) 20250329 55 20250330 57 20250331 261 20250401 256 20250402 223 20250403 166 20250404 137 DATE - °C - RH% (Tent Temp/RH) 20250329 25.0 45 20250330 24.0 48 20250331 23.7 53 20250401 24.1 47 20250402 24.5 47 20250403 23.9 43 20250404 24.2 40 DATE - °C (Reservoir) 20250329 20.9 20250330 20.2 20250331 19.2 20250401 19.3 20250402 20.6 20250403 20.4 20250404 20.2 DATE - CF 20250329 15.49 (false value) 20250330 15.54 (false value) 20250331 24.51 (false value) 20250401 19.40 20250402 19.49 20250403 20.01 20250404 20.13