Liquid Ferts concentrations - The Planted Tank Forum
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post #1 of 4 (permalink) Old 12-31-2015, 11:49 PM Thread Starter
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Liquid Ferts concentrations

I'm moving from dry dosing to auto dosing with a peristaltic pump. After reading up on how much water is needed to dissolve the ferts I did a little test to see how much water I needed for a single dow.

for one does of Macros I use
1/2 t KNO3
1/8 t KH2PO4
1/8 t K2SO4

I tried adding water by the 10mL until it seemed to dissolve, but even at 50mL of water I had a bit of granules left on the bottom. I tried both tap water and distilled water and didn't see any appreciable difference.

My thinking was to figure out how much water I needed, then just dose that amount of liquid. It seemed easier to me to figure it all out this way.

Anyone have an idea of how much water it takes to get it all dissolved or am I doing something wrong?

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post #2 of 4 (permalink) Old 01-01-2016, 01:11 AM
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No idea how much, but warmer water will dissolve more easily
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post #3 of 4 (permalink) Old 01-01-2016, 01:17 AM
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Use a magnetic stirrer.
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post #4 of 4 (permalink) Old 01-01-2016, 01:23 AM Thread Starter
Planted Tank Obsessed
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I'll give the magnetic stirrer a go. From here it makes it seem that I should be able to dissolve one dose in 15.8mL of water. That is why I was questioning it.


Last edited by lovingHDTV; 01-01-2016 at 01:34 AM. Reason: Edited for wrong amount of water
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