Dr. Grinspoon by TOTEM

Hey everyone! So... basically I think I have a very hungry sativa over here! Want a proof? You can see some yellow leaves in the middle! Runoff PPM was...... 450 (with 150ppm of tap water)!!! But at week 5, the recommended value for a sativa should be something like 750/800! She definitely wanted food. But a localized yellowing could be also caused by Mg deficiency, which blocks the plant from absorbing N easily. Thanks to my bro @Mr_Di who helped me listing all the possible causes. By the way, ppm value was very low, so I thought she was just hungry, and fed her with full strenght nutes (1.5ml/L). Lately I’ve alternating nutes+tap water and just tap water, but since I discovered she’s insatiable, I think I’ll start fertilizing every time (possibly with half dosages in order to avoid salt buildups in the future). The stretch is now almost over, so I don’t expect any significant change in the upcoming days. Because of this, I opted for stepping those colas I tucked last week (which were short) one block back. I moved some of them directly in the middle, since there was a lot of space available. It’s been hard because I was about to snap some of them. I partially cropped one, but it’ll be fine. If you do this, just be very cautious!!! The new 600W cob panel is coming next Tuesday, so let’s get ready! I’m absolutely excited for this! It will be a total game changer. 🤩 Day 78: Feed @ 1.5ml/L, in 6L of tap water. This week BioMassa is back, and stopped with Florastimo for a week. BioMagno suggests to alternate them and never use together. Runoff ppms changed from 450 to 750. Next time, as I said before, I’ll water with nutes again, maybe @ 1ml/L, which is the minimum suggested dosage on feed chart for week 5. Day 81: I’m not really sure that yellowing was caused by underfeeding. Yes, ppm levels were low, but it could have been overwatering as well. I say this because those leaves are slowly getting more yellow and crispy, and eventually falling off, as well as having red/purple veins on them (typical of overwatering). Unfortunately I can’t raise the pot and understand if it’s heavy or not. Day 82: Welcome to my new 600W cob panel. 6x CREE CXB3590 (3500K). I switched my old 384W red/blue one with this. New height: 55cm. Those chinese suppliers sold me two 200w drivers instead of 300w ones, so I’m running cobs @ ~400w now. I’m opening a dispute and make them send me the right ones now. Stay tuned! 😏 Today I removed the first small layer of coco coir because it wasn’t a good indicator to understand when it’s time to water. At the time (transplant day) I used this layer of coco coir because I run out of Bio Terra Plus. After removing the coco, I had to add bat guano (this time just 150g instead of the suggested 200g for week 1 of flowering), algae and neem flour back to the surface of the soil. Will not water immediately because I want her to dry out a bit first. Lastly, I added two CO2 smart bags to the top of the grow room. I don’t have a CO2 monitor, so this is just to add some more CO2 than usual, and hope she will appreciate it.