05-31-2018, 11:44 PM
Join Date: Oct 2014
| | Re: Calcium deficiency?
Originally Posted by Beerman
I just purchased about 20 pounds of seiryu stone to add. With my already high KH ~ 20. Should I return for a different stone. I was just reading that it can have affects on Hardness of water.
With this tapwater you should use only RO water, and let the seiryu stone harder you water. If still have some problem, like not the best Ca:Mg ratio, you can add MGSO4 or CaCL2 to the water.
The higher KH means you have other carbonates in water than Ca or Mg, mostly NaHCO3 and NaCO3 what is very harmful to the plants, the Na ion excess can prevent Ca,Mg, K uptake partly or fully, and the extra HCO3(what you measure with KH) higher the pH, too.