Well I'm not a big fan of that advice of randomly increasing the MC. At one time I would have said to push the MC to the limit but when I did say that I meant within their recommended dosages.I read on the MC thread, or somewhere on 420M, that someone increases their MC .5g/gal every other feed, until they see burnt tips, and that tells them where their plants want to be, and they back off just a bit. I tried it, and my plants got better.
I'm not frustrated. I can only tell you what I know. It's up to the individual to go with what makes sense to them based on their own research. There's several reasons why not to go that high with MC outside of the current recommendations. Firstly I keep going on about N. Cannabis likes a N load of around 90-180ppm. Outside of that and you risk nute burn or create week stems that when touched they break at the petiole. Currently at 15g+ you are dosing at 386ppm of N.And I'm trying to, so please don't get frustrated.
Most plants take nitrogen from the soil continuously throughout their lives, and nitrogen demand usually increases as plant size increases. A plant supplied with adequate nitrogen grows rapidly and produces large amounts of succulent, green foliage. Providing adequate nitrogen allows an annual crop, such as corn, to grow to full maturity, rather than delaying it. A nitrogen-deficient plant is generally small and develops slowly because it lacks the nitrogen necessary to manufacture adequate structural and genetic materials. It is usually pale green or yellowish because it lacks adequate chlorophyll. Older leaves often become necrotic and die as the plant moves nitrogen from less important older tissues to more important younger ones.
On the other hand, some plants may grow so rapidly when supplied with excessive nitrogen that they develop protoplasm faster than they can build sufficient supporting material in cell walls. Such plants are often rather weak and may be prone to mechanical injury. Development of weak straw and lodging of small grains are an example of such an effect.
An optimum level of nitrogen in plants will result in:
- Vegetative vigor.
- Bright green leaves because of chlorophyll production.
- Increase in the number of leaves, size of the stem, fruits and seeds.
- Increased resistance of plants against fungi.
- Increased resistance against insects.
- Increased resistance to frost and hail.
- Excessive foliage growth.
- Weak stems.
- Delayed ripening of fruits, being less sweet.
- Claw-shaped leaves facing down.
- Poor bud combustion.
- Bright green leaves.
- Little resistance to pests in general.