The Planted Tank Forum - View Single Post - Potassium reference solution
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post #11 of (permalink) Old 07-14-2016, 04:32 PM Thread Starter
Fissure
Planted Tank Obsessed
 
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Location: Sweden, Malmo
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Good to see someone doing something to further improve the hobby.
In my case though, since you are pretty much saying that most (maybe all) commercial fertilizers including dry powders will turn your tank toxic to some degree. I will try out the Aqua Rebell complete iron fertilizer according to their EI recomendations.
I also hope I do not sound ungrateful, but I do not have the time nor the interest to go full chemist on my tank.
When it comes to heavy metals I do not think I have to worry about my tap water. I live in a newly built appartment and copper pipes are a thing of the past here.

When it comes to the comunal water where I live this is all the info I could get.
Temprature at test C
14
Microorganisms at 22 C, after 3 days cfu/ml
2
Microorganisms at 22 C, after 7 days cfu/ml
13
Coliform bacteria, 35C cfu/100 ml
<1
Coloration mg/l Pt
<5
Turbidity (grumlighet) FNU
0,2
pH
8,2
Conductivity mS/m
37
Alcalinity, HCO3 mg/l
139
Smell
None
Taste
None
Chlorine total mg/l
0,04
Ammonium, NH4 mg/l
<0,01
Nitrite, NO2 mg/l
<0,004
Nitrate, NO3 mg/l
5,5
Fluoride, F mg/l
0,23
Chloride, Cl mg/l
28
Sulfate, SO4 mg/l
30
Phosphate, PO4-P mg/l
0,008
Organic coal, TOC mg/l
2,9
Iron, Fe mg/l
0,01
Manganese, Mn mg/l
<0,01
Calcium, Ca mg/l
34
Magnesium, Mg mg/l
7,5
Total Hardness, Ca+Mg mg/l
46
Total Hardness, Ca+Mg dH
6,5
Copper, Cu mg/l
0,03
Sodium, Na mg/l
34
Potassium, K mg/l
3,3

Not sure what to do with these when it comes to EI. But I will like I said try out the AR Micros and probably cut down on the macro dosing by 1/2. Keep track on the phosphates and esp. K levels in the water.
And hope the pinholes will go away. Pretty sure it won't though...


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