Tap water

[Rwarmack]

I have a Tap water purifier on the sink I use for fish is this enough its a huge purifier I have used it for all my fresh water tanks for a couple years I change it monthly is it okay to use for water top offs & changes on a reef tank?

[moog24]

I wouldn't

[BigRedsReefs10]

Not for sw tanks

[TheTodd]

Agreed. For reef, you want RO water at a minimum and ideally RODI. Anything less will have a high TDS, which is not good for corals.

[melosu58]

I have an article about why you should not in sw.It is in the sw articles section. I work for a large water municipality so I have a little experience on the subject.

[Rwarmack]

Thank you!! all for the response I will do the RO water =)