HELP! Cycled tank - nitrate drops to 0!
I'm battling with my first 10gallon planted, dirted, freshwater aquarium. Ups and downs, ups and downs. I need some help with my water.
So, my tank has been cycled for about a month, we have lots of plants- a crazy amount of swords spawning more and more, 3 crypts, java moss, tons of anarchist, 3 anubias... etc. We also have driftwood.
We added 7 neon tetras about a week ago, we also have some pond/lung snails.
Water tests have been done on a daily basis since we added the fish. We did a 30% water change last Friday. Everything seemed fine until yesterday, our nitrate level read 0 (nitrite 0, ammonia 0, pH 7).
What's happening? Has our nitrogen cycle crashed? Are my fish in danger?
Thanks for anyone's input!