I agree that the article had a bit of "truther" tone to it. I wouldn't let that offend you. There may still be better values out there than MG (without jumping all the way to organic). I use the word "value" because everyone's priorities differ. You might value yield. Another person: taste (or support smaller competitors, or less complexity mixing nutes).
I've read there are different chelation chemicals or techniques. In another thread, someone posted a link to
this Canadian regulatory web site.
For fun, I pulled up MG's and Grow More's Hawaiian bloom booster. The only thing that stands out to me is MG's arsenic content.
[TABLE="width: 500"]
[TR]
[TD]
| |
| |
| |
| Arsenic (As) | = 5.1 |
| Cadmium (Cd) | < 1 |
| Cobalt (Co) | < 2.5 |
| Copper (Cu) | = 0.07 |
| Lead (Pb) | = 0.25 |
| Mercury (Hg) | = 0.02 |
| Molybdenum (Mo) | = 3.4 |
| Nickel (Ni) | < 2.5 |
| Selenium (Se) | < 1 |
[TD="bgcolor: #
CC, align: center"]
Miracle Grow
[/TD]
[TD="bgcolor: #
CC, align: center"]
Heavy Metals (ppm)
[/TD]
[TD="bgcolor: #
CC, align: center"]
Analysis
[/TD]
[/TD]
[TD]
| |
| |
| Arsenic (As) | = 0.47 |
| Cadmium (Cd) | < 1 |
| Cobalt (Co) | < 5 |
| Copper (Cu) | = 135 |
| Lead (Pb) | < 5 |
| Mercury (Hg) | < 0.02 |
| Molybdenum (Mo) | = 6.2 |
| Nickel (Ni) | = 2.5 |
| Selenium (Se) | < 0.25 |
[TD="bgcolor: #
CC, align: center"]
Grow More
Heavy Metals (ppm)
[/TD]
[TD="bgcolor: #
CC, align: center"]
Analysis
[/TD]
[/TD]
[/TR]
[/TABLE]
I don't know the name of the MG product you use, but would be interesting to see how it compares to things like GH Flora Series, or Grow More's Sea Grow 16-16-16 veg nutrient (or 4-26-26 bloom nutrient). Or, GH Flora Series.
It would also be interesting to know the acceptable levels of these heavy metal. For example, Arsenic is supposed to be 0.39 to 39. In this range the difference between 0.47 and 5.1 may not be significant.
