Here is one with much less damage, could K start out like this? Luckly it is only getting one strain bad and another only slightly, the strain that is hit bad is the strain that did the best while i was what i believe overdoing the calmag on the last few grows so it makes sense that it likes more.
I cant see pix on my phone but how ofter you foliar feeding? Have you considered a schedule that includes micro nutes (zinc, boron etc)? It may help, quit a few on market. Its harder to stop a problem once its there than to prevent it. Starting to learn most of us dint think about certain things a plant needs because we focus on the big three, but by failing to give everything it opens up the possibility of problems for thr npk issues
I dont foliar feed, i figure it may get a bad taste in the bud. I did kinda do this on purpose but i didnt expect it to get this bad. I used to use calmag at 5 ml per gal every feeding wich i dont know how i never realized it but that meant it was getting it 2 t 3 times a week so 10 to 15 ml per gal per week, way to much. It caused a buildup and was locking out cal. Then K and then others so this time i used none to see wich ones actually need it and when. Now i know and because of how fast it advanced and how long it is taking to take effect i will be giving all of them a dose in the last week of veg and a couple times in flower but a higher rate to the two strains that seem to want more. This is if im right and the calmag is the deficiency.
This could be a potassium issue too. Potassium and call mag issues look very similar. I found this on IC mags website https://www.icmag.com/ic/showthread.php?t=11688 Potassium (K) Mobile Element and Macro Element Potassium plays a big role as well. Having good amounts of potassium in your plants helps in having sturdy and thick stems, disease-resistance, water respiration, as well aids in photosynthesis. Potassium is also found in the whole plant. It is necessary for all activities having to do with water transportation. Potassium is necessary for all stages of growth, especially important in the development of Buds. Having to little of Potassium in your plants causes the plants leaves to show retarded growth and show a scorched tip and edges around the leaves. Plants may stretch and your branches can be easily broken or weak. Don’t get this deficiency confused with iron, because it almost acts like iron but to tell the difference in the two is: for potassium the tips of the leaves curl and the edges burn and die. Older leaves may show a red color and leaves could curl upwards. Dead patches (Necrosis) can happen on the margins of larger fan leaves thus, the leaves will eventually die off and turn brown. The Older leaves will show different patches of color (mottle) and turn yellow between the veins, following by whole leaves that turn dark yellow and die. The plants overall growth slows down, mostly when they are in vegetative stage. To little amount of potassium also slows the growth of buds during flowering stages. Dark edges will appear around the edges of the leaf when the deficiency is starting to happen. When your Relative humidity is low, you can almost bet your going to soon get a potassium deficiency from your plants perspiration. Potassium can get poorly absorbed when having too much Calcium or ammonium nitrogen, and maybe cold weather. Having to much sodium (Na) causes potassium to be displaced. SO keep those in mind… Parts affected by a Potassium Deficiency are: older leaves and leaf margins. When you have too much Potassium in your soil, it can lead to big troubles, like salt damage and acid fixation of the root system, as well as too much potassium can cause a calcium deficiency. Your fan leaves will show like a light to a dark yellow to whitish color in between the veins. Due to a molecular imbalance, potassium toxicity can cause a reduced uptake and lead to the deficiencies of Mg, and in some cases, Ca. Also leads to the other nutrients to not be absorbed properly leading to lots of other deficiency such as: magnesium, manganese, zinc and iron and can cause problems with calcium as well. Problems with Potassium being locked out by PH troubles Soils with excessive Leeching and High ph soils and or water.Soils that are potassium fixated. An excess of kitchen salts (sodium) in the root system/enviroment. Soil Potassium gets locked out of soil growing at ph levels of 4.0-5.5 Potassium is absorbed best in soil at a ph level of 6.0-9.5. (Wouldn’t recommend having a ph of over 7.0 in soil) anything out of the ranges listed will contribute to a Potassium deficiency. Hydro and Soil less Mediums Potassium gets locked out of Hydro and Soil less Mediums at ph levels of 4.0-4.5, 6.0-6.5. Potassium is absorbed best in Hydro and Soil less Mediums at ph levels of 4.7-5.3, 6.7-8.5. (Wouldn’t recommend having a ph over 6.5 in hydro and soil less mediums.) Best range for hydro and soil less mediums is 5.0 to 6.0. Anything out of the ranges listed will contribute to a potassium deficiency. Solution to fixing a Potassium deficiency Any Chemical/Organic nutrients that have potassium in them will fix a potassium deficiency. Again Peters All Purpose plant food 20-20-20, will cure the potassium deficiency , Miracle grow Tomato plant food, Miracle grow All purpose plant food.( Only mixing at ½ strength when using chemical nutrients, or it will cause nutrient burn!) Some other supplements of potassium are: Wood ashes, which are fast absorption, Kelp Meal, which is medium absorption, Greensand, which is slow absorption, granite dust, which is slow absorption. Sulfate of Potash, Sulfate of Potash Magnesia, Muriate of Potash, which are medium absorption. FOXFARM GROW BIG HYDROPONIC CONCENTRATE, which is fast absorption. (FFGB can bring your ph down as well) Earth Juice Meta-K, which is fast acting. (Can bring down your ph as well) Leaves will never recover, but the plant will show recovery after about 4 to 5 days when using a fast acting nutrient. Note: Wood Ashes, can make your ph go up a bit, so please monitor your ph when using it. Now if you added to much chemical nutrients and or organics, (which is hard to burn your plants when using organics) you need to flush the soil with plain water. You need to use 2 times as much water as the size of the pot, for example: If you have a 5 gallon pot and need to flush it, you need to use 10 gallons of water to rinse out the soil good enough to get rid of excessive nutrients. Picture 1 and 2 shows a Potassium deficiency ( Thank You General Ganja for letting me use Picture 1!)
That icmag thread was a good read, he goes pretty into it. I definitely dont have leaves like the pics on the strain with what i believe to be a ca def. but another strain has the blotchy leaves and ends in yellow leaf with some green veins. Here is a pic of that strains leaves From the potassium deficiency description on that thread this could be it. I figured it was mag and nitrogen. This is king kush and when the other plants leaf tips burnt slightly these did not so i just figured it needed more nutrients then the rest with a little calmag added and these leaves were just a result of being a hungry bitch. Cal deficiency can cause a K deficiency so it could also be both. Only this is is nothing is brittle like it has been when i had it from to much calmag.
Well time for a good update instead of just the issues. All in all i am happy with the way things are going for having so little light. Thought i took more pics but i guess i forgot, i will get more soon This is lemon kush at 3 weeks flower This is king kush at 5 weeks, it is the strain with the blotchy leaves from the previous post. Also king kush at 5 weeks.
Well its 2018 already but I want some good bud pics for last update. First off the first pic is the top of the problem strain, its got pretty much all the stages of what I thought to be calcium deficiency but I am not convinced completely that that is all it is, possibly a K or P deficiency with it. The buds are still maturing and I think the progression has slowed a lot or stopped. All the rest are from yesterday, 5 and a half weeks in. Besides the damaged g-13's everything seems to have done a lot better without using calmag every feeding. I only added it once G-13 showed signs of Ca. deficiency 3 weeks in flower. I used to use it at 5 mil a gal every time I fed. On previous runs I think it was overdosing the mg and because of the extra ppm's I was using less of everything else and caused it to be underfed. for the best part being fuzzy, my phone wants to focus just a little to far, why dont they have manual focus on digital cameras. G-13 ALIEN OG LSD DREAM MACHINE BUBBLEGUM X MASTER KUSH GORILLA GLUE BLUE HASH WHITE WIDDOW LEMON KUSH also i am wondering how i get my photos to show in media, it just shows the grey three dots thing.
