Ok,,,,,,,,,,,,,,,,,,,,,got a question.
I recently added sand from my old setup (which had been dry and sitting in a Glad bag for 8 months) to my tank. Prior to doing this, my ammonia was at zero, my nitrites were zero and my nitrates were about 10 ppm.
I just took a nitrate reading last night (3 days after adding the sand) and my nitrates were off the charts ( 160 ppm) :shocked: !!!!!!
Could the addition of the pre-used sand have caused such an enormous spike?
Obviously a water change is in order at this point but how much ????
I don't think a 50% water change will be enough to really get my Nitrates down? Should I do like a 75% or more change?