How to Fix a Magnesium Deficiency in Soil?
Although magnesium deficiency is most common with soilless growers, there are times when soil-bound growers become susceptible to this nutrient issue as well. Under certain conditions, an imbalance with other nutrients can lock cannabis out of micronutrient absorption.
Elevated levels of other nutrients, like potassium and calcium, may trigger the nutrient lockout of magnesium. Other environmental influences can also impact nutrient absorption, most critically pH level.
Once you've identified the issue, test the soil for pH, and adjust as needed to fall back within the ideal range of 6.0 to 7.0 pH with a water flush. Once flushed, assess the nutrients you have been using to better understand the magnesium supply.
Epsom salt is the most common way to apply straight-magnesium to your grow, but it must be diluted into water at a
20-25 ppm ratio. Dolomite is a combination of calcium and magnesium, also useful for an immediate correction.
With a market full of cannabis-specific nutrients, catering to all types of substrate and stage of growth, it may be time to refresh your current supply. If you've been mixing nutrients yourself, or adapting non-cannabis varieties, consider a switch to improve magnesium uptake in your cannabis plants.
Source:
Cannabis has a greater need for magnesium than other plants. Indoor growers especially must remain vigilant for the signs of magnesium deficiency. Most basic nutrient products from your hydroponics supply store have the N-K-P covered, but micronutrients, like magnesium, are equally as important...
www.happyhydro.com
Start with the epsom salt. Easiest way to get your plant mag. It looks to me that you plant is locked out though. It’s tough diagnosing because it may be an excess of something as well. This is where it gets tricky. Good luck. Happy grows.
Burnz
*edit
I know you’re in coco but it’s pretty similar to soil, but everything happens faster in coco.
