Hi. I'm in the midst of cycling my tank, and I had to do several large water changes in a row because my nitrite was scarily high (5 ppm). At the time, my nitrates were about 40. I tested this morning (two days since the last 25% water change and addition of Prime), and my ammonia is at 0, nitrites at .25, and nitrates at 5.
I don't know what to do now. Is my cycle done? Should I do a water change or leave it alone? I've read the stickies, but I don't know what to do with this combination. I think I should do a 25% water change again, but the people at PetCo told me I'm killing my cycle and that I should leave it alone, so I'd like to verify.