I've been cycling my 5 gallon tank for about 4-5 weeks now. The ammonia stage seemed to pass quickly, but the nitrites are just dragging their feet!
Last week I had a nitrite spike, and did a partial water change. But for several days now (with no
water changes) the nitrites have been at 0.25 and the nitrAtes are a steady 5ppm. The 5ppm is from my tap water.
I'm just wondering if there is something going wrong? I would have thought the nitrates would start coming up, but they have not. :/
I have a sponge filter, ran off an air pump. There is plenty of flow. I am just unsure why the cycle seems to be at a standstill. >> I should add that I have a couple of sword plants and a bit of duckweed.
Thanks for any help!!
PS - I have a Betta in this tank, so any suggestions need to be fish friendly! I know a fish-in cycle can take longer. But it is odd to me that it has stalled.