Found Nitrate on our tap water

all tap water has nitrates as far aas i know. unless you have R.O. water then you will always have nitrates.
fast growing plants use it up but not enough to neglect on water changes.
BTW 12.5mg/l is pretty low to be honest and nothing to worry about.

yeah all tapwater has nitrates. how much depends on where you live...

I have a reasonable amount here, I choose to RO some water.

With the amount of water I have and need to change, there is no way I can deal with a RO ssytem...

As said, that amount of No3 is negligeable...do not spaer, however, on the wc's..

my nitrates sit at about 20ppm out of the tap. nothing i can do about it. RO isnt an option as its military housing so cutting into the plumbing could be very bad.
i use plants that serve a dual purpose by feeding my uaru and using nitrates as well. it works but at water change time (every week) they sit at around the 40 mark. my fish are very healthy and active. no illness at all.

Miguel;1967216; said:

With the amount of water I have and need to change, there is no way I can deal with a RO ssytem...

As said, that amount of No3 is negligeable...do not spaer, however, on the wc's..

Click to expand...

Yeah, I wouldn't say the amount is worth a RO to start with, I happen to have really very hard limey water here, which isn't great for my SA fishies!

I used to take my water into petsmart to get tested. They always suggested 5 or 10 percent water change. I got suspicious and took in some aged tap water in and they said 10 percent water change. Funny huh.