I'm in the process of setting up a low tech, planted Australian native Rainbowfish aquarium, but have run into some issues concerning the rather weird water found in my area.
My water parameters are as follows:
General Hardness(GH): 44 ppm
Alkalinity(KH): 36 ppm
A link to the source of my information: Water Quality | ACTEW
Bellow are the ideal water parameters for Rainbowfish:
General Hardness(GH): 50-250 ppm
Alkalinity(KH): 50-200 ppm
So I need to increase the GH and KH to stabilize the pH, but at the same time I don't want to raise the pH, which is just within the margin it needs to be.
Does anyone have any suggestions as to what I should add to the water the raise the GH and KH without also increasing the pH?
In all honesty I'm not even sure what would be causing such soft water to have such a high pH in the first place, but tests at home confirm that information from the website is correct.
This is my first aquarium and my understanding of water chemistry is very patchy, so any prevailing wisdom would be most appreciated.