Does CSM+B provide enough iron on it's own? - The Planted Tank Forum
 
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post #1 of 10 (permalink) Old 04-08-2005, 07:14 AM Thread Starter
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Does CSM+B provide enough iron on it's own?

I just started using this stuff. I previously used Flourish. It had a strong smell of iron, but the CSM has practically no smell, which makes me wonder if it contains less iron. Should I add some iron chelate?
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post #2 of 10 (permalink) Old 04-08-2005, 07:36 AM
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I don't believe CSM+B contains *any* iron. Many people dose CSM+B and Iron Chelate separately. I just use CSM+B(w/ iron) and wondering if that was the best route as I've heard mixed reviews on what form of iron plants most readily use....Is it Fe 3+?

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post #3 of 10 (permalink) Old 04-08-2005, 08:02 AM
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Plantex CSM is the recommended source for micronutrients ... Contains:
1.5% Magnesium (MG),
1.5% Magnesium (cheleted), 0.10% Copper (Cu), 7.0% Iron (Fe - cheleted),
2.0% Maganese (Mn - Cheleted), 0.06% Molybedenum (MO), and 0.40% Zinc (Zn - cheleted).

http://www.gregwatson.com/PMDDStoreInfo.htm
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post #4 of 10 (permalink) Old 04-08-2005, 03:40 PM
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No, it doesn't contain enough iron.

Keep in mind there is also a Plantex CSM+ iron out there.

I dose CSM and Iron on alternating dosing days.

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post #5 of 10 (permalink) Old 04-08-2005, 04:23 PM
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Dose both CSM and chelated iron myself (both from G. Watson). CSM in solution and the iron dry...

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post #6 of 10 (permalink) Old 04-08-2005, 06:15 PM Thread Starter
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How much of the iron do you dose?
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post #7 of 10 (permalink) Old 04-08-2005, 06:35 PM
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Dunno exactly how much. I use the spoon set from GW and the smallest one at that. One of those per couple of week seems to work for me (playing it by eye according to what I'm seeing).

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post #8 of 10 (permalink) Old 04-09-2005, 09:43 AM
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I'm a bit puzzled as to why some people think there isn't enough Fe in CSM+B. I mean it comes down to a question of the concentration of your stock solution doesn't it?

I think that adding 10ml of CSM+B (mixed at 1tbsp with 250ml of water) stock solution to a 200l tank gives you around 0.2mg/l of Fe in your tank with every dose. Why is this not enough?

And if you want more, why not just add say 20ml of the stock mix instead of 10ml? this will give you 0.4mg/l of Fe with the dose...

Puzzled here! Unless the goal is to absolutely avoid adding more of the other micro nutrients in CSM+B by just upping the %Fe in your ferts?

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post #9 of 10 (permalink) Old 04-09-2005, 10:28 AM
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shouldent extra iron only be dosed if needed.. and when its identified as the defieciency...
CSM does contain Iron.. ringram were did u get the idea that it didnt?
i use API leafzone which has fe and k2o.. so thats been my source of extra k too.

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post #10 of 10 (permalink) Old 04-09-2005, 05:24 PM
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Quote:
Originally Posted by Laith
I'm a bit puzzled as to why some people think there isn't enough Fe in CSM+B. I mean it comes down to a question of the concentration of your stock solution doesn't it?

I think that adding 10ml of CSM+B (mixed at 1tbsp with 250ml of water) stock solution to a 200l tank gives you around 0.2mg/l of Fe in your tank with every dose. Why is this not enough?

And if you want more, why not just add say 20ml of the stock mix instead of 10ml? this will give you 0.4mg/l of Fe with the dose...

Puzzled here! Unless the goal is to absolutely avoid adding more of the other micro nutrients in CSM+B by just upping the %Fe in your ferts?
If you want to add one of the larger traces in a high ratio, it's a waste in terms of the plant if you also do not add the other traces along with it.

I think folks think too much about Fe and not enough about all of ther traces.
If you need more Fe, it stands to follow that you need more of all the Traces, not just Fe.

Your test kits do not measure Mn and Zn athough Cu can be measured.
Point is, using a general borad array of traces and increasing that dose rather thanm just Fe will help and is a safer approach to finding what you need for the plants.

Dosing Fe separately has not done much IME/IMO. Still, it's a trace and not much needed.

Testing Fe is fairly unless in terms of what is a good residual for plants.
So I try to stay away from ppm measurements.


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