Auto flowers
FFOF soil
FF trio nutes (feeding weekly @ low end of recommended ppm range)
Water/feed @ 6.3-6.6ph
80-83 deg
40-60% rh
(2) ts1000 led lights
lazy version of the diag form
Have been developing these spots lately on multiple different plants/strains. They seem to react positively to calmag supplement but does not really resolve the issue. Have moved a couple plants outdoors which did seem to resolve it. Just want to make sure I am attacking the most likely culprit, calcium deficiency (based on photos of others with this problem)
Have not been watching runoff closely as they have only been getting ph corrected water up until recently when they stated getting spots so I started with very light nute mix an some calmag weekly.
Pics of the full plants, as well as their counterparts which were germinated at the same time, from the same batch of seeds but took off much quicker. The ones I moved outside did have some of the same spotted leaves down low but have been doing much better since I moved them outdoors.
FWIW the thinner plants are Durban Poison and the bushier thicker plants are BB3
All the nutrients in the world won’t help as much as they can without microbial life in the soil. If you can find someone near you that brews compost teas with lots of aeration to bolster microbial life I would attempt getting some into that soil within an hour or two of the air pump being shut down. I predominantly use worm casting tea but that’s mostly because I have my own worm ranch at home chowing down on compostable items. Mycorrhizal fungi helps to as it communicates with the root system. However growing in bags I don’t know if it would be of a benefit as there is no other plants for it to be connected to. I’m not suggesting not feeding the plant however I would say the benefit of bolstering your soil along side it will make a massive difference in the quality of your product.
Be aware that microbes and mykos are 2 different things. People often confuse them.
Mycos is a fungus that works with your plant’s roots to improve nutrient uptake.
Microbes are beneficial bacteria in your soil that consume plant nutrients and then poop them out in a form more easily absorbed by the plant.
Fox Farm soils contain sufficient amounts microbes straight out of the bag, but some growers do supplement it. Be careful with microbe products. Too much of it can dramatically increase nutrient uptake and cause nute burn. Many growers add unsulphured molasses as the sugars in it are great for feeding microbes.
@MidwestGuy mentioned…run off numbers of the PH and PPMS would help diagnosing the issue. The plant could have nutrient deficiency related to lack of nutrients in the soil or PH related issues preventing nutrient absorption
Good info, I did have myco+ and microbes confused.
Requested info;
Nutes went in @ 850-1000ppm, 6.2-6.4ph
Runoff came out at 2000-2200ppm, 5.8-6.0ph
Knowing that, it seems like possible nutrient lockout to me??
Since they are autos and already starting to flower in their small/unhealthy form- im thinking of repotting them up to bigger pots and moving them outdoors then watering the fresh soil (mix of new and old) with a round of sledgehammer… thoughts on this plan?
Did you ever notice any bugs or tiny flies or anything that may have eaten the leaves nectar for lunch? That happened to some of the leaves on my plant a few weeks ago…just a thought but yours are yellowing so…?
Feeding compost teas every week you’re not going to burn anything the microbial life doesn’t live forever. And it doesn’t just work with one plant assuming you’re growing with other plants around your cannabis. Also keep in mind the microbes will feed the mycorrhiza as well. The fungus if growing in living soil will start to form an almost spider web appearance under the soil communicating with all of the life within its connection area! A mother oak will send nutrients to its own off spring a mile away in the forest before it goes to the oak next to it. Nature grows no different in the simplest of ways than we as humans do. We propagate the hopeful success of our off spring same with plants!! Good luck. I know nothing about PPM or PH as they have no bearing on how I grow. (Try Ph balancing a microbial active compost tea! It don’t work!!!)
