Quote Originally Posted by kui loach View Post
I am confused, I was adding marine buffer or baking soda and my kh kept going higher as well as my ph.
Also under the web site filterdirect.com, I have a RO6102dint rodi unit. Please which filters do I need? I ordered filters 1,2,3 (sedimt filter and 2 carbon filters). Do I also need a 6th stage resin filter or simply resin refill bag? Appreciate any help
I have the same RO DI unit. Actually I get a new one every other year because it is "almost" cheaper then replacing the main membrane. It is a little more expensive......but you get ALL of the filters new so in the end it is cheaper then replacing all of them.

I usually have someone who buys my old ones for around $30 so it covers the shipping of my new one.

As for your PH issue, I posted the same thing. Grrrrr What is the dosage per gallon of the pickeling lime or baking soda? I can't remember.

Thanks,
Angie