OK, get a pint of both RO and tap and mix them together without chemicals and then check the PH and then bubble it for a few hours and check for PH again. I'm not sure what this is going to do, since if I'm using tap water I'm going to have to put chemicals in it. I'm kind of confused one what it's going to accomplish. Thanks...
The only Chemicals you need to put in are the ones to remove Chlorine, Chloramine and ammonia. That will not affect your ph. All those chemicals you have listed are not neccasarry. When you find the right mixture of R/O and tap water, then your ph will be ok. You need some of the hardness of your tap water to keep your aquarium happy. That will take care of the ph and the alkalinity. If you can't go to a fish store and buy prime, or something simple like that to remove the chlorine, chloramine and ammonia, from your replacement water,then use the Nova Aqua +