I recently got a 5 gallon divided tank to put my bettas into. The gravel i put in it was from my well established 10 gallon tank. I turned the filter on my new 5 gallon on the 13th, and its the 17th. Also in those 4 days I added fish food every single day. I just tested my water and got the following: Ammonia 0.25 ppm Nitrite 0.50 ppm Nitrate 5.0 ppm I will continue to add fish food every day. Will i be able to put my fish in this weekend? I want to put them in their tank this Saturday, the 21st, which will be 8 days after my cycle started. I will test the water again this saturday before i decide officially to place them obviously. But did my tank cycle this quickly because of the gravel? And what are the exact nitrate levels i need to know my cycle is finished?