Manganese sulfate (MnSO4) has been found
by researchers to be the most effective fertilizer for
supplying Mn to crops.
Or here:Chelated forms of Mn should not be applied to the
soil. Research has found that those forms may in
fact make the Mn deficiency worse.
Seachem flourish does use MnSO4.NOTE: It has been reported that if a Mn-chelate (EDTA) is added to the soil to correct an apparent deficiency problem, the most common result is increased Mn deficiency. This occurs because the affinity of chelates for Iron is greater than their affinity for Manganese and substitution occurs. The Fe-chelate is rapidly taken up by the plant and the ensuing interaction increases the Mn deficiency.
One of the most common observations I see in many of the email's I get is the "concentration" of the solutions many of us make when we make our own micro nutrient solution.chiahead said:Hi guys, I know flourish is a more complete fert, but the price is way more expensive. Plus its so low on iron you would have to add the flourish iron to cover. I was wondering if anyone has used the flourish and the combined with the CSM-b mainly for the iron? I found the 2l flourish bottles for 20 bucks, so I am going to try it and mix it with the CSM-b, i just want to know the mix %.
<grin> ... I'm usually pretty quiet ...chiahead said:Hi Greg Watson, I was surprized to see your post.
There are archive discussions on that going back quite aways. The person who could probably best answer that question just might be Mr. Steve P.chiahead said:
In most cases, Plantex does not have enough Magnesium in it in terms of its relationship/ratio to other micro nutrients ...chiahead said:that link u posted has a list for addign 1 tablespoon of CSM+B and 1 tablespoon ok magnesium sulfate with water. Why do all the posts I see add Mg?
I don't personally know the answer to this one <grin> ... carbonate hardness is not a problem I have to worry about with my tap water <GRIN>!!!!chiahead said:What about calcium? Isnt the calcium/Magnesium ration supposed to be 4:1?
There are two different kinds of chelators and I can't explain how they work. And if I understand it correctly, Flourish is the only commercial aquatic trace formulation that uses an Iron Gluconate form of Iron rather than a chelated version(?) [I am not sure about this at all ...] ...chiahead said:Also, what are your thoughts on Aviel's post about the chelated ferts compared to the soluable or more avail form?