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I noticed that my micro fertilizer (CSM+B) has particles floating around in it. I used distilled water in the solution and I keep them in a dark cabinet. Is this normal?
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I can't see the particles that you're talking about in the photos, but it's more than likely mold. The Micro mix that we use will grow mold in just a few weeks. It's harmless, but still unsightly.
 

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I don't even bother premixing in water. I just take the amount I need for the tank mix it in a cup and dump it in.
A lot of people (myself included) who mix their own micros premix into distilled water to make dosing easier and more consistent. Measuring .00002g of something every other day is tedious...
 

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I have this sometimes growing in my mix after a month. As others have said its most likely mold and harmless. Using some excel in your solution will help prevent this but it always shows up after awhile.
 

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A lot of people (myself included) who mix their own micros premix into distilled water to make dosing easier and more consistent. Measuring .00002g of something every other day is tedious...
Not saying there's anything wrong with it, just stating what I do. A spoon is more then efficient for me. It's not a perfect science to me where you need a scale. Plants, uptake, displacement, water change differences, fish load, testing kit errors, etc. makes it so IMO.
 

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I have this sometimes growing in my mix after a month. As others have said its most likely mold and harmless. Using some excel in your solution will help prevent this but it always shows up after awhile.
I add a little Acetic Acid to drop the pH to around 5ish. That stops it in its tracks.
 

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Not saying there's anything wrong with it, just stating what I do. A spoon is more then efficient for me. It's not a perfect science to me where you need a scale. Plants, uptake, displacement, water change differences, fish load, testing kit errors, etc. makes it so IMO.
OP wants to dose ei, so precision is not needed.
 

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As mentioned, what you're seeing is a bit of mold. Adding Flourish Excel (glutaraldehyde), citric acid, or even a bit of hydrochloric acid (be careful!) will slow down/prevent mold formation (through preservative/lowering pH, respectively).

You could also store it in the fridge to slow down mold.
 
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