06-22-2012, 04:44 PM
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City water vs whole house filtered
Everything is in place to start adding water to a new aquarium. Since my last hobby aquarium was dismantled in 1975, I have been reading 100's of posts on this site, and I now have all the information, knowledge and skill to insure success (HAH!!!)
In my reading, I've not come across this question, so I pose it now...
My city water is hard and we have a whole house filtration system, both carbon and salt. In addition, there is an undersink RO system. So, when I fill the tank initially, what water should I use? And when I do regular water changes? I'm guessing start with a mix and see what the numbers are in a couple days, but I'd rather hear from someone in a similar situation.
Is there an advantage to one or the other; more importantly is one or the other more likely to cause problems?