What does a CSM + B overdose look like? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 05-29-2019, 10:05 PM Thread Starter
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What does a CSM + B overdose look like?

I've been trying to keep my iron around 0.5 to 0.75ppm by dosing CSM + B. However, my plants seem to be having all sorts of issues. I'm seeing signs of major, contradicting deficiencies depending on the plant, especially the day after I dose 1/32 tsp of cam + b into my 22 gallon (more like 18):

Potassium - Pinholes, yellowing and melting of leaves besides the newest generation of stem.
Nitrate - Older/lower leaves completely dying off
? - New leaves on stem plants specifically seem to be smaller. These plants never recover even when moved to a low tech tank. It's like something was damaged internally, permanently.

I'm following EI and aiming for 20/20/5 nitrate/potassium/phosphate. Calcium is high due to rock, around 70-100ppm depending on how long its bee since a water change. Magnesium is around 10ppm.
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post #2 of 6 (permalink) Old 06-06-2019, 02:41 PM
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Chances are, you are dosing too much rather than too little.
AR looks like this under too much traces for example


If you have very hardwater, some plants do not do well with EI dosing (Rotala, pogostemon erectus, ammania species)
If you are dosing that high level of nutrients - it is very unlikely you have deficiencies.

This tank works on 15ppm K, 7ppm NO3/PO4 a week for example. 200 umols of PAR...



read this as well
https://www.advancedplantedtank.com/tunnel-vision.html

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post #3 of 6 (permalink) Old 06-06-2019, 03:17 PM
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If you have very hardwater, some plants do not do well with EI dosing (Rotala, pogostemon erectus, ammania species)
What's the threshold for that?

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post #4 of 6 (permalink) Old 06-06-2019, 04:22 PM
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Quote:
Originally Posted by Rainer View Post
What's the threshold for that?
It depends on water hardness/alkalinity - when Vin kutty's AGA video becomes available, you can extract the data from his talk. It covers this topic specifically. It is also the reason why folks here spend so much time tweaking their values ( and come up with so different results/outcomes ).

On a individual level, its easy to test - run 2 tanks side by side with different parameters

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post #5 of 6 (permalink) Old 06-06-2019, 06:35 PM
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Perhaps I should reconsider ordering r. mexicana "araguaia" or "vietnam" for the new tank. Local water is 7.6 pH; 8 dGH; 6.7 dKH.

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post #6 of 6 (permalink) Old 06-07-2019, 08:19 AM Thread Starter
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Originally Posted by Rainer View Post
What's the threshold for that?
It depends on water hardness/alkalinity - when Vin kutty's AGA video becomes available, you can extract the data from his talk. It covers this topic specifically. It is also the reason why folks here spend so much time tweaking their values ( and come up with so different results/outcomes ).

On a individual level, its easy to test - run 2 tanks side by side with different parameters
Interested to see the data. My GH was around 15 for a while. The calcium from my rocks didnt seem to be able to saturate past that point though.

My theory is that high calcium or GH makes it harder for other nutrients to be absorbed, potentially potassium or iron.
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