The Planted Tank Forum - View Single Post - Tank self cycled?
View Single Post
post #5 of (permalink) Old 01-25-2013, 12:17 AM
wendyjo
Planted Tank Guru
 
Join Date: Feb 2009
Location: DC area
Posts: 3,055
Some sources of tap water contains nitrates, so test your water straight out the tap and see if that could be what's going on.

Is your tank stocked at all?
wendyjo is offline  
 
 
For the best viewing experience please update your browser to Google Chrome