Feeding

Far too wet for far too long, you have been running near 70rh the entire grow with temps in the low 70'sF. Daycycle: At 30°C/86F, a leaf may transpire three times as fast as it does at 20°C/68F, through stomata. This is where the surface temperature of the leaves can make a difference, as the optimal temperature for the photosynthesis process is a stable 28˚C or 82.4˚F. Usually, the leaves are between 3° and 5° F cooler than the room because they are transpiring. The evaporation on the leaf's surface literally draws heat from the leaf, thereby cooling it. Endothermic. Water cycling through plants is a process that involves water moving from the soil through the plant and back to the atmosphere through transpiration. This process is part of the larger water cycle. Water cycling and nutrient uptake are related because water dissolves nutrients and transports them to plants. Water, water, water until? EC tells you to. A low soil EC reading indicates that it's likely time to fertilize, as a low EC signifies a low concentration of soluble salts and nutrients in the soil, meaning the plants may be lacking essential nutrients; conversely, a high EC reading suggests the soil is already sufficiently fertilized or even over-fertilized, potentially causing plant stress. Ideal EC levels need to be adjusted as cannabis plants grow, typically starting at about 0.8-1.3 for seedlings and steadily increasing to about 1.5-2.0 during flowering. This will vary somewhat according to your chosen strain, your growing medium, the nutrient solution, and growing environment. EC levels that remain too low or too high can kill a plant. Thankfully, these levels can be adjusted to bring cannabis plants back to health if issues are identified quickly. The key difference between "soil EC" (electrical conductivity of soil) and "water EC" is that soil EC measures the conductivity of the entire soil matrix, including both the solid particles and the water within the pore spaces, while water EC only measures the conductivity of the water itself; essentially, soil EC reflects the total salt content in the soil, whereas water EC represents the dissolved salts only in the water portion of the soil. Electrical conductivity (EC) to parts per million (PPM) can be converted using a variety of formulas, including EC x 500 or EC x 700. The conversion factor used depends on the scale and the type of solution being measured. Conversion formulas EC x 500: Used to calculate PPM 500 or TDS EC x 700: Used to calculate PPM 700 EC x 0.55: Used to get an approximate PPM equivalent EC x 1000 / 2: Used to get an approximate sodium chloride TDS value PPM x 2 / 1000: Used to get an EC value

Your plants are raggedy and need a lot of correction 24 on WTF. You better keep the very basics in your mind. FLUSH FLUSH FLUSH! Then, start researching your plants back to health, while getting your soil right. Keyword searching goes a long way to solving and learning. Depend on yourself.

Start a diary and link it to the question. Can't help with no information to much what if's If this is the diary? growdiaries.com/diaries/249467-jelly-donutz-autoflowers-permanent-white-marker-autoflower-mack-and-crack-auto-grow-journal-by-bongo05 Then it looks like you have bad watering habits. want to water the entire pot with some runoff to prevent buildup. Like others said 24/0 is bad. I'm sure their is more but this is a good learning experience for yea. not a complete loss so its good. get filimier with EC/PPM and PH if you are not already it will help when useing liquidnutrients.

Your plants are also experiencing light stress. Turn down your light about 10-15%. The extra light is compounding your issues. Here's why ... your light is driving your plants too hard and with the improper nutrition you're headed towards crash and burn. Follow @Organoman's instructions below ... and in this case, even cal-mag. You are showing multiple deficiencies and your light intensity is making your problems worse. I also see signs of over-watering so water thoroughly and then let your plants dry back until the pot is light when you pick it up. It's common for cannabis to need 3-4 days between watering ... and sometimes longer if the pot is too large to allow quick dry back.

NEVER, ever grow at 24/0! 18/6 is optimal. ALL cannabis plants, autos included, NEED "sleep" for a correctly functioning metabolism. A plant with an incorrectly functioning metabolism will never grow to its full potential or be 100% healthy. There are certain metabolic processes that can only occur during the dark period, without this dark period, your plants are basically malfunctioning. At the moment, you seem to have multiple issues..........phosphorous deficiency, hungry for both potassium and nitrogen....as well as a probable calcium deficiency and lacking magnesium too. So yes, not feeding enough. All the supplements you are giving, while helpful, none of them contain N-P-K, the basic building blocks for all plants. The only N-P-K fertilizer you seem to be giving is the Terra Bloom, but in the grand scheme of things, you are hardly giving any of that at all.........which means your plants are missing out on those basic building blocks that they need to grow properly. Reduce your supplements, increase your Terra Bloom, go to 18/6 and hopefully they will pick up soon enough.........it may take 10 days or so to show an improvement, but it will happen.

Are you keeping an eye on the PH? In the soil and runoff? What about ppm in the water nutrient mix going in and in the runoff? I also didn't do that at the start of my last Auto grow but found out pretty fast it wasn't so good.😁 I use a cheap ppm measuring pen from Amazon and it does the job done. I always know the in what range i am with my nutes. I would say try that. If you get a ppm between let's say 600 - 900 in the runoff you should be good. If that is the situation I would guess is because the PH fluctuations in the soil that your gurls are in lockout and don't uptake the nutes in the soil. If the ppm is low like under 500 or 400 then give them gradualy more nutes and keep an eye on PH and ppm of the water nutes mix going in but also the runoff water😊 If you have enough nutes in the soil and your girls are in lockout the flush and try to get the soil right😁 I wish you the best and that the girls rebound😊 Don't forget we are all learning here😁 Keep up the good work💪 Love💚 Peace✌️ and Unity🤗!