Trying Out The Non Co2 Method - Some Questions

I went through the Non CO2 methods sticky thread and I am interested in trying out that approach. The approach being discussed states that very few water changes are required. In my case, this will not be possible, I change 50% water on a weekly basis and would like to keep that schedule. In such a case, shouldthe Seachem Equilibrium and KNO3/KH2PO4 weekly doses be different to the amounts recommended in the article?

Also, my tap water is very hard, in such cases, would you still add Seachem Equilibrium?

I will only have Anubias and java fern in my tank.

thanks,

Ilai