Should I be concerned with my KCl additive?

DiscusHeckel

Acropora Gardener
Hi,

I use a Potassium chloride product to maintain the potassium levels in my reef tank between 310 ppm -390 ppm. I test K levels using Salifert. Below is the manufacturer's specification. Is this product reef safe?

Thanks in advance.

"Confirms to Ph Eur,BP,USP,USP,FCC and European Food regulation E505

Minimum Assay: 99.0-100.5%

Bromide(Br): <0.1%

Suplhate(SO4): <0.01%

Heavy Metals (Pb): <0.0005%

Aluminium(Al): <0.0001%

Arsenic (AS): <0.001%
"
 
Last edited:

Jimmy54

New member
The grade you have is third on the list of purity; first comes Ultra Pure, than Pro Anelyse, than comes v.p or very pure like the one you - and I have.

Here's a complete list of all ingredients that comes with this grade of KCl.

F Acid<0.003%
F Alk.<0.005%
Al<0.0001%
As<0.00005%
Ca<0.005%
Cu<0.001%
Fe<0.001%
Mg<0.002%
Na<0.07%
Pb<0.001%
Zn<0.002%
HM as Pb<0.0005%
Br<0.1%
SO4<0.01%

Maybe you should look into K2CO3 and/or KHCO3 too.
And make your own "K-balance" ;)

A tip; for its solubility check Wikipedia
 
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