"James Ervin" wrote in message
...


Ok, this may sound odd, but I have noticed a contradiction between
changing water to remove accumulated nitrate and then adding nitrate
in various forms via some type of fertilizer. What part of the big
picture am I missing?

Change water to remove nitrate in an unplanted tank. Most planted tanks
have low nitrogen, you change water to limit the odd crap that tends to
build up.

Bob