Success with tap water

[Dendromad]

Originally Posted by BCOrchidGuy

Our water in the gvrd has almost no dissolved solids, even discus breeders need to harden the water a tiny bit.

I do not believe there is any reason for rodi water. Buy an inexpensive deionizing filter to polish your water. Our water has chloramine I believe, you can remove that with prime or the DI filter.
On the bright side if you do go with rodi filters your membranes should last a very long time as there are no carbonates or bicarbonate to remove

Chloramine is not used in treatment in metro vancouver. They use UV, Ozone and Chlorine. Aging and aerating the water will remove any chlorine

http://www.metrovancouver.org/servic...s/default.aspx

[Dearth]

Due to a combination of things in my personal life I ended up using tap water for just over a year while it has not caused any harm to my corals or fish per se I have had a constant battle with Cyano I am in the process of switching back to RODI water now

[Trigger Man]

I started using tap water back in 2016, after talking to Denis at Golds who had started using tap water. He had got me into using RO water way back when I started doing salt water.
I have found that I don't have any algae issues, but then again my tank has been pretty consistent for a while (*knock on wood*). All my fish seem to be the same, and my coral looks happy and grows (other then when my French decides to take a nibble here and there).