This hobby is about taking your time. Don't do a shortcut by adding unfiltered water. Stick with it and use your RO/DI filter.
This hobby is about taking your time. Don't do a shortcut by adding unfiltered water. Stick with it and use your RO/DI filter.
I used tap and have major algae problems right now. It also doesn't help that I've got a crappy light set-up and no skimmer...But that will all change in a little bit. I am doing RO/DI water changes though...which should help.
Also, FWIW, I asked the same question. I have a 150, and have a slow RO/DI. I didn't feel that I had any other choice than to use tap...but based on my current tank scenario (algae), I think if there's a way to use RO on the initial fill-up, I would use it.