"Djay" wrote in message
...
Mort,

You SHOULD have a KH of around 2 ~ 3. That will act as a buffer if you
want
to inject CO2 into your tank for your plants. The CO2 injection without
the
KH as a buffer will CRASH your PH to a point where your tank may be too
acidic or have huge PH swings that are lower than your detectable limits
of
your test kit. The way to increase your KH is to use the RO/DI and (yes)
add some tap water to it to get the desired KH level. Remember 0 KH
reading
is a PH disaster waiting to happen.

DJay


Got it, thanks for the advice. I am going to set up my can for a batch of
RO/DI water right now and hopefully can to some water changes tomorrow.
I'll let ya know how it goes.

~Mort