01-30-2012, 07:43 AM
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This is a very young tank, only stocked for a little over a month, but I fishless cycled it. The tiger barbs have been there for about two weeks, I should include that I added two more fish on Friday 27 - a sparkling gourami and a spotted cory. Now my total stock looks like: 7x serpae tetras, 5x tiger barbs, 1 pearl gourami, 1 sparkling gourami, 1 spotted cory. I also added some more plants.
I fully expected my water parameters to be spotless, since they have been this whole time (there hasn't even been nitrate, I think the plants have been using it all). However, I tested yesterday and found slightly under 0.5 ppm ammonia. The rest were alright (pH stable at 6.4, 0 nitrite, 0 nitrate, 1 dkH). I attribute it to the new additions, and I may have overfed a little. So yesterday I cleaned out any dying plants, uneaten food, and waste that I could get to and did another 25% PWC. I've stopped feeding for the time being as well.
I still cant help but think that something else is going on, since I've read that ammonia turns into much less harmful ammonium in acidic water. I'll do water changes until the ammonia is completely gone and see if they improve. Thanks for your reply.