I currently have a Ph of 8.4 in my tanks with airstones (2 in my 55 gal), biospira, and Stress Coat being used. I need to bring the ph down, but I also need to add salt to make the mollys happy and probably iron to make the plants happy. Water is very hard here in Utah. How can I balance all these things that will affect ph? Also, when I get time, I'll be adding a home - made CO2 kit. Any ideas?