Potassium Question - The Planted Tank Forum
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post #1 of 3 (permalink) Old 07-09-2017, 01:27 AM Thread Starter
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Potassium Question

Hey guys,
I'm pretty new to the planted tank hobby.

I've been told the recommended amount of potassium for a planted tank is 10-30ppm. If I understand the chemistry, a cap (5mL) of Flourish Potassium only raises the ppm of my 45 gallon a little over 1.5ppm.

At this rate, it seems like I will be going through a lot of Flourish Potassium to maintain the recommended ppm. Is this the case for any of you guys? Perhaps I'm overestimating the amount of potassium the plants will consume in a given period of time.

Does anyone recommend buying K2SO4 and creating a DIY solution?

Thanks!
Matt
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post #2 of 3 (permalink) Old 07-09-2017, 01:50 AM
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Quote:
Originally Posted by matsev View Post
Does anyone recommend buying K2SO4 and creating a DIY solution?
Yes, but don't forget the KH2PO4 & KNO3 to add to your macro solution!

NilocG.com is a source for dry ferts.

Most of us make our own solutions or dry dose.


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post #3 of 3 (permalink) Old 07-09-2017, 02:35 AM
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Depending on your existing GH you could just use gh booster once a week to get your desired level. Typically you want 3:3:1 Ca:K:Mg. NilocG and others use this ratio in their gh boosters.


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