SirGideon

@FarmerJon, thank you! Buds are starting to look nice and fat alredy! Have not posted updates here for some reason, but they look good 👍

@AutoflowersSucK, That cal-mag actually solved the problem very nicely! :) they didn't grow very tall, but the plants turned into healthy green after I gave cal-mag to them.

Really hard to diagnose. At first i was sure it was lack of iron, but iron deficient plants usually start to yellow from leaf stem to tip. Yours are yellowing tip to stem. Nitrogen defecient leaves usuallu yellow from tip to stem but they typically yellow evenly without leaving any green leaf veins. And the yellow tends to eventually crisp up, turn brown and die. Your leaves are yellowing tip to stem, leaving green leaf veins. What most closely resembles what i see your leaves doing, based on my research, is Sulphur deficiency. Here is a link for you to explore that i think will help. https://www.zamnesia.com/grow-weed/499-sulphur-deficiency-cannabis-plants

Bud sites at only Week 3?! That's pretty insane. Good work, buddy!

@SirGideon,Hey buddy, hope things turn around. I'm almost certain you have some iron issues. Run grab a bottle of Cal-mag and apply it with your current regiment and i think you'll resolve the problem. A serious nitrogen deficiency will show first in the lower leaves as uniform yellowing that continues till the leaf crisps up and dies The plant pulls nitrogen from lower growth to aid in it's new shoot development. And slowly it will move up the plant. Low nutrients will show as a light, sort of sickly light green which will display across the entire plant. Anemic looking. Iron displays at the growth tips as a yellowing with thin green leaf veins. (pretty much as your plants appear)

I had a look at your latest week. Ya if I had to guess i would say increase the nutrients. If it's a lack of nutrients you'll see a leaf from the tip in start to go a paler green and will move through the leaf down to the stem. The plant is pulling nitrogen out to give it to new growth.. your TDS is 450. You should be at 750 to 800 at this stage, if you are starting week 3 of veg that is. Monitor your pH daily cuz it can fluctuate. 5.8 for hydro is ideal in veg. Looking a second and third time at your plants, too me, my best guess, is that your pH is out of range. You have necrotic spots on some lower leaves. Your growth tips are extremely pale. If i remember correctly that is a sign of iron deficiency. You also have raised leaf edges on some of the leaves. Sometimes early magnesium deficiency shows that way. Raised edges could also be low humidity. When you mix your nutrients, always mix in your micro first, then grow, then bloom, but always micro first. And pH your water after you've mixed your nutrients. If you mix your water to 5.8 and then stir in your nutes, the nutrients usually drop my pH by a full point. And, when you add your ph down, add it slowly. Like 20 drops at a time then stir and test....etc. If you dump a bunch of pH down into your nutrient mix you might see it look cloudy when it moves through the water. Thats bad! Thats your nutrients becoming bound to each other and getting locked out. Pick off the damaged bottom leaves on the runt. The damage makes the plant vulnerable to pathogens and disease. Pick up some General Hydroponics Calimagic. Nitrogen takes a ride on Calcium ions I believe. A last ditch effort if upping the TDS and keeping a close eye on the pH doesn't net any results, is drain out your res and mix a fresh batch on nutrients the way i mentioned above. Frankly i'd just flush and re-do your rez. Last edit i promise. After doing some looking around and a bit of research, i can tell you that the yellowing at the tops is not lack of nitrogen, it is a IRON deficiency. The way to spot that is that iron deficiency always displays at the tops of the plant. Nitrogen is a somewhat uniform yellowing of the entire leaf. Here's the difference. Your plants growth tops are yellowing but the veins of the leaves remain green. You need to get some Cal-Mag because not only does it contain calcium and magnesium, but it also contains some extra iron. Iron is most available to plants grown hydroponically between a pH of 4.0 to 6.0. Anything above or below those ranges and iron is unavailable to the plant. Try to keep your pH consistently around 5.8. Get yourself some cal-mag and adjust your pH to 5.8 and try to keep it there and they will green up again.

@AutoflowersSucK, This site converts EC to TDS somehow different than other sites.. here when I calculate 0.9 EC it converts to 450 TDS but elsewhere 0.9 converts to 0.576. Well anyway now they have 1.3 EC, 0.832 TDS. Ph has been very consistently at 5.8-6.0 so can't be that. Ok, I need to check out that iron deficiency thing and Cal-Mag! Thanks so much for looking info!

@AutoflowersSucK, Thanks I will look up Hygrozyme! Never had any root rot problems, I think this NFT system prevents those pretty efficiently, but maybe I should have a look just in case.

@SirGideon, Yeah i used to do heavy misting. Drenching actually when i was preparing to take clones. I ended up killing my favorite mother by doing that because i left them vulnerable to pathogen invasion which is what happened. The plant never recovered and eventually died. Check your root zone, as i'm assuming that is a hydroponic grow your doing. If you see anything brown in colour then you may have some root rot. I over watered a young OreoZ mother recently and she got really sad. She got pale and droopy and stunted growth and necrotic spots on some lower leaves. Leaves curlung down and slight cupping. I couldn't feed her because the soil was wet and took forever to dry out. She's still alive but slow to recover. Today i'm going to hit her with some hygrozyme, and i was going to suggest you use that product as well or some other enzyme root specific product like Sensizyme, if you see any browning in your root zone. I've got a bottle somewhere so i'm gonna dig it out today and use it. Look up Hygrozyme on yourtube. People rave about it and i think i'm going to start to use it regularly myself. My initial thoughts for the product was to use it to eat up the roots in my coco so that i can re-use it again, but i'm going to use it on my plants as well to keep the root zone in top shape.

@AutoflowersSucK, I do mist them :o alright maybe i should stop doing that. Leaves are turning yellow now. From stuff I saw online it looks like nitrogen deficiency. I'll post new pics tomorrow. Thank you for commenting and tips!

Looks like perhaps old over water damage sort of. If new growth is coming out green and healthy with no droop or curl, then your good, and i would pick off the damaged leaves as they are vulnerable to pathogens now. Never mist your plant leaves either. Do you? Water left on the leaves can magnify the light and cause leaves to burn.