Subject: Re: Water Chemistry for nothos. by bwatters on 2012/4/7 11:14:26
Nothos do prefer water that is alkaline and, in captivity at least, hard water is best. Hard water will have good buffering capacity and avoid rapid drops in pH which can often happen, especially when using peat as a spawning medium.
I would recommend that you try using your tap water just as it is and I suspect it will work well for Nothos. Age it for a few days before using it and, if necessary, add something to neutralize the chlorine or chloramines.
When I lived on the Canadian prairies I had very hard tap water and my Nothos did very well in that. Since I moved to Vancouver Island, where the water is extremely soft (I have on occasions measured TDS at <10 ppm in my tap water) I have to add all sorts of "stuff" to the water to raise the TDS and the buffering capacity. The Nothos do alright in it but not as well as they did when I was using the hard tap water and it is a real nuisence to have treat the water.