Question on Cycling.

Those readings were at 10 this morning and you did a 15 % water change afterwards...

If ammonia and nitrite is not at zero, do water changes until they are, as has been stated repeatedly in this thread.
 
Yes, it does look like you are probably at the next stage of your cycle, if your ammonia has been staying at 0 for 3 days. If your nitrite is reading 5, definitely do water changes immediately to get it down to 0, or at least to under .25. Keep doing the water changes as long as you are seeing any nitrite. Once your nitrite goes down and remains at 0 for a few days (nitrate will stay steady or increase), you will be done cycling! At that point, just do water changes to get nitrates down below 20, and from then on, you will just have to do regular weekly water changes to keep nitrates in check and you'll be good to go.
 
bumpylemon -- Your almost though the cycling process. Now is a very critical time as nitrites are very dangerous to fish. You will probably need to do two 75% water changes a day for the next couple of days. You should test the water 6-8 hours after you do a water change to see if there is any detectable ammonia or nitrites.
 
on my 29 gallon tank my ammonia is a .25ppm and nitrates and nitrites 0.

i just did a 50 percent water change on that.


i also just did a 75%WC on the 15 gallon ill check the stuff in a few min


im having trouble restarting the aquaclear 30 after the water change...hmmm
 
ok my ammonia is at .25 on the 29 gallon. but its a low .25 so ill do another water change today.


the 15 gallon nitrites went down to 2 and nitrates to 30. i threw in some amquel plus. ill check it in a few hours than do another change...


whats worse for fish....25 ammonia or 3 nitrites?
 
the 3 on nitrites is bad.

The water change will help both.

A 50% waterchange will lower them by half.

You need to get the nitrites less than .25
 
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