Hi. I had my betta in a 5 g and thought I wanted more fish. So I added a couple cory cats. After transferring to a ten gallon, with all my media. (Previous tank about 4 months old and cycled) I got the two Cory's and everything was ok. I was worried the Cory's weren't getting any food because my betta never lets anything hit the ground so I got the hikari wafers. Now I'm spiking ammonia, a little every day. 1.0 ppm today. 0 nitrites and 5 nitrates. The tank is lightly to moderately planted. I'm. not sure if it's the 2 added fish plus food or that I may have cleaned the gravel a little too good. After the transfer. I bought some seachem stability but that isn't doing jack. I always dose accordingly with Prime and have a fluval u1 internal filter. I cut the sponge that comes with it in half and put my old media filter and ceramic pellets in the extra space. Recently I took out one pad as it was clogging the works. Should I just keep up the daily partial water changes for awhile and give up on the stability?