03-12-2007, 01:55 PM
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Originally Posted by kateyoup
Okay, thanks for the information - that helps.
I'm a bit concerned that you don't have a nitrate reading - nitrate readings should be present after cycling a tank.
What type of filter are you using, and when you say you changed it, do you mean that you completely replaced the filter media?
I don't remember what the nitrates reading was at the end of the cycling period, but it was at least in the safe range when I added the new guppies and neon tetras. (I understand how the cycle works.) My filter information can be found under the Tanks button. The filter I replaced was the blue one, not the BioWheel.
Thanks for the replies, but I didn't mean this thread to turn into a discussion of the nitrogen cycle. My question is, is it normal for fish to die? If you had a small tank, cycled it and put small schooling fish in it, would you expect a 100% survival rate?