Thanks... I read on another site that first you should get TA at proper level (Baking Soda)... then worry about PH.

Not sure I can aerate... no waterfalls, etc...

So when I raise the TA with Baking Soda, PH will also rise... currently it is 8.0.... the other site said correct TA will help stabilize PH. So I guess I will try and get TA up to 80-90 range, then add acid to bring down PH... and do it in small increments and hope TA doesn't come down too far in process.