low pH,does nitrifying bacteria die?

[TechAquaria]

No, It's a well established tank. a couple weeks back I removed all the filter media from one of the filters in order to seed my 29 gal tank I was stting up. Must have trigger a mini cycle. After 2 water changes of 25% the pH has come up to 6.8, and the ammonia is back to 0ppm but I will continue to monitor all parameters until the tank is back to normal. Thanks for all the help.

Easy then! Pick out the answer you like ...

Once you have exhausted it/them, then focus on a fix which works. With practice, it becomes easy!

Remember, you can see a problem, try a fix, repeat, see the problem again, try the fix, etc.--then, change what you are doing and recognize the REAL "fix" when it works!

Or, not ...

Regards,
TA