Yes, from a factory that make it directly, yes if i remember my schools years, KCL is highly solubleDid you get it from a reputable source?
KCl should dissolve readily, my first thought would be to suspect that it's not KCl.
As mentioned 26g should dissolve in 210ml of water. Here's a snap shot of solubility levels in g/per 100ml of water @ 0,20 & 40 ⁰c.KCL is highly soluble
Try sprinkling some on the flame from a gas jet or meths burner. K salts will be light lilac, Na salts will orange. The chloride will produce a white ppt when added to silver nitrate solution.if i remember my schools years, KCL
How? What?it was k2so4, i don't want it because it boost diatoms growth already in huge amount in my tap
I think he is confusing silicates with sulphate? Anyway, I would highly recommend using k2so4 since kcl is a very alkaline chemical. And some people have reported issues, no such issues with k2so4 however.How? What?
pH of 1 mM solution: K2SO4 7.01, KCl 7.00. No difference, really. (Taken from CRC Handbook of Chemistry and Physics 90th ed [internet ed] - D. Lide (CRC, 2010) WW, a highly authoritative source.)I would highly recommend using k2so4 since kcl is a very alkaline chemical
Hmmm, I wonder why I thought kcl was much more alkaline. Apologies🙃 and will edit my comment.pH of 1 mM solution: K2SO4 7.01, KCl 7.00. No difference, really. (Taken from CRC Handbook of Chemistry and Physics 90th ed [internet ed] - D. Lide (CRC, 2010) WW, a highly authoritative source.)
What @_Maq_ says.pH of 1 mM solution: K2SO4 7.01, KCl 7.00. No difference, really. (Taken from CRC Handbook of Chemistry and Physics 90th ed
Potassium (K) is an alkaline metal, but potassium chloride (KCl) is a <"neutral salt">, because it is formed from the reaction of a strong acid and a strong base.Hmmm, I wonder why I thought kcl was much more alkaline
I should have put the reaction in for K2SO4 as well.@X3NiTH is right, potassium chloride (KCl) is a <"neutral salt"> because is the product of the reaction between a strong base (KOH) and a strong acid (HCl). Potassium (K) is a <"group one alkali metal">. Group 1 metals are highly reactive and only occur as compounds (salts), <"those salts are all soluble">.
......... potassium sulphate(K2SO4) is the salt formed by combining KOH (potassium hydroxide) and H2SO4 (sulphuric acid). Because H2SO4 is a strong acid, and KOH is a strong base, K2SO4 is a neutral salt.......
I don't know exactly why, but everytime i dosed k2so4 i had diatoms in my tap water aquariums, if i dose KCL, i don't have diatoms.How? What?
It is <"pretty soluble">, via <"Wikipedia">: "316 g/1000 g water (20 °C)". In fact ~all potassium and nitrate containing compounds are soluble. So it must be a contaminant.i know that KNO3 is not perfectly soluble in room temperature
It should be all right, it won't be exactly the dose that you want, but it should be close enough. The reason for "close enough" is thatProblem is that there is still some powder in the bottom of the bottle if i let it rest, if i shake it well before dosing, does the calculation is still correct without 100% mix ?
Would have meant that your original solution was more less concentrated than you thought. You should have added the DI water to the KNO3 powder until it weighed 200g, yours will have weighed ~209g, if that makes sense?removed the demineralised water, added 9g of KNO3 powder, added 200ml of demineralised water
Damn, i don't know how it came inHi all,
It is <"pretty soluble">, via <"Wikipedia">: "316 g/1000 g water (20 °C)". In fact ~all potassium and nitrate containing compounds are soluble. So it must be a contaminant.
Well i added the 9g kno3, pressed tare then added 200ml of di water, so yeah 209g, should've added 191g of water instead ?It should be all right, it won't be exactly the dose that you want, but it should be close enough. The reason for "close enough" is that
Would have meant that your original solution was more less concentrated than you thought. You should have added the DI water to the KNO3 powder until it weighed 200g, yours will have weighed ~209g, if that makes sense?
Yes.Well i added the 9g kno3, pressed tare then added 200ml of di water, so yeah 209g, should've added 191g of water instead ?
It will be fine. I'm <"not too worried"> about the <"minutiae of dosing">.Pump is 1.5 ml, 200 ml, 9g kno3, 45 liters, which mean that i put 0.92 ppm for each press, instead of 0.96 ppm NO3 with 191g of water, if i'm using the calculator well, it might be ok ?
Hi @eminorI don't know exactly why, but everytime i dosed k2so4 i had diatoms in my tap water aquariums, if i dose KCL, i don't have diatoms