Wow, thanks for the replies and the concern. I think I caught it in time. No ammonia after water changes and this morning, but did water change again. Added prime to treat whole tank size last night, kept the water level a little low to increase surface agitation. No deaths yet, but my blue ram looks a little sad. Poor thing. And, as far as my instructions went, I did say, no need to feed while I am gone, as I had researched feeding during time away and felt that they would be fine. But, I think my stinker angelfish put on their permanent "please feed us faces". My fish sitter is my loving husband, who totally supports my obsession, but is pretty hands off (per my request, mostly) and I think I may now have some favors ahead of me. haha. I was so upset, crying and he apologized over and over for not looking at the tank after feeding them. He said, "I don't stare at it, like you do." He probably will now. The reason it was so apparent to me immediately, was I have black blasting sand in my 20 and the food laying on the substrate was unbelievable. My 2 cherry red shrimp even survived, so far. Worried about what effect the water changes will have on them. And, the a guppy decided it was time to have some more fry over the weekend also. I am sure I will have a MTS explosion. I can easily deal with that. I had just gotten 4 new huge cory cats for my 56, but they all look healthy as well. Again, thanks for the support and advice. My tanks would not be as healthy as they are without this forum and the knowledge I gain from it. I will continue with the water changes and watch my nitrates, as now it is time to deal with my outside gardens. lol.