For about a month now i switched to RODI water for my 75 gallon tank. I do a weekly 10 gallon waterchange. I use a simple test strip each week just to keep an eye on things. I have noticed my KH/ carbonate hardness is steady going lower. Its at 40ppm today. Also, my General hardness was going down as well, but it has been fixed.
Should i be concerned? The only other things ive been doing is I manually dose a few drops of magnesium and kalkwasser about 3 times a day(to fix the GH, and it has worked). My GH is back up to 180ppm and staying. Not sure about KH/alkalinity or what i should do. I did not expect this with RODI water. I bought the 5 stage system BRS. The TDS meter says 0 on the filtered water.
I use the Red Sea salt mix in the blue bucket. I did not have any issues before i switched to RODI.
Should i be concerned? The only other things ive been doing is I manually dose a few drops of magnesium and kalkwasser about 3 times a day(to fix the GH, and it has worked). My GH is back up to 180ppm and staying. Not sure about KH/alkalinity or what i should do. I did not expect this with RODI water. I bought the 5 stage system BRS. The TDS meter says 0 on the filtered water.
I use the Red Sea salt mix in the blue bucket. I did not have any issues before i switched to RODI.