I just wanted to ask if I was using RO/DI water, would I first need to add Equilibrium then add the Alkaline/Acid buffers or can I simply add the buffers without the Equilibrium?
You can use the buffers without Equilibrium. The buffers offer KH while Equilibrium offers GH. It simply depends on how you would like to adjust the parameters for your system.
I also noticed that this product increases K to about 50ppm, so that means there's no need to dose K untill the weekly water change. Also, no need to dose Mg and Ca. Great product!
Buffers 
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