Hi, I just noticed that you guys have a new trace mix formula. It seems a bit lower in Fe than the previous mix. Just curious why the formula was changed and if this new one was made based on some new research or testing ? Could someone post the old formula for comparison ?
New trace mix
- Thread starter Mortis
- Start date
Mortis said:
Hi
The manufacturer changed the formula
I don't have the old break down anymore - sorry
The old break down was (from a JamesC post):
Boron (B) 1.06%
Copper (Cu) 0.23%
Iron (Fe) 8.2%
Manganese (Mn) 1.82%
Molybdenum (Mo) 0.15%
Zinc (Zn) 1.16%
The new break down is:
Boron 0.14%
Copper 0.13% (chelated by EDTA)
Iron 1.01% (chelated by EDTA)
Magnesium 15.18%
Manganese 0.76% (chelated by EDTA)
Molybdenum 0.03%
Zinc 0.30% (chelated by EDTA)
How do these new percentages effect our dosing regimes (over to the experts
)
Boron (B) 1.06%
Copper (Cu) 0.23%
Iron (Fe) 8.2%
Manganese (Mn) 1.82%
Molybdenum (Mo) 0.15%
Zinc (Zn) 1.16%
The new break down is:
Boron 0.14%
Copper 0.13% (chelated by EDTA)
Iron 1.01% (chelated by EDTA)
Magnesium 15.18%
Manganese 0.76% (chelated by EDTA)
Molybdenum 0.03%
Zinc 0.30% (chelated by EDTA)
How do these new percentages effect our dosing regimes (over to the experts
)aaronnorth
Member
RoughIt said:The old break down was (from a JamesC post):
Boron (B) 1.06%
Copper (Cu) 0.23%
Iron (Fe) 8.2%
Manganese (Mn) 1.82%
Molybdenum (Mo) 0.15%
Zinc (Zn) 1.16%
The new break down is:
Boron 0.14%
Copper 0.13% (chelated by EDTA)
Iron 1.01% (chelated by EDTA)
Magnesium 15.18%
Manganese 0.76% (chelated by EDTA)
Molybdenum 0.03%
Zinc 0.30% (chelated by EDTA)
How do these new percentages effect our dosing regimes (over to the experts
i doubt it would affect it much. EI isnt based on one trace mix alone, it covers for a variety, so i doubt you should notice a change.
spider72
Member
If we are dosing traces in relation to iron, than clearly we need to dose more of new trace mix in relation to old formula.
spider72
Member
I meant, that whole new mix need to be dosed in bigger amounts, not only iron.
Previous mix didn't have any Mg and this is probably why new mix has lesser percentage of traces. Most probably Mg is added in form of MgSO4x7H2O (epsom salt) which contains about 10% of Mg by mass, so probably quite a lot of this salt by mass had been added, than other traces percentage went down in the same volume of powder. You don't need to add than epsom salts to your NPK mix.
Comparing new and old mixes by iron contents, about 7 times more of new mix need to be dosed to achive level of iron caused by using the old one.
Previous mix didn't have any Mg and this is probably why new mix has lesser percentage of traces. Most probably Mg is added in form of MgSO4x7H2O (epsom salt) which contains about 10% of Mg by mass, so probably quite a lot of this salt by mass had been added, than other traces percentage went down in the same volume of powder. You don't need to add than epsom salts to your NPK mix.
Comparing new and old mixes by iron contents, about 7 times more of new mix need to be dosed to achive level of iron caused by using the old one.