GinkoTracks Posted February 27 Share Posted February 27 Hey there all! So I have a 30 gal freshwater tank. I fill my tank with RODI water remineralized with Salty Shrimp GH/KH. Its running on a sachem tidal rated for a 50gal tank, and I do water changes ~ every two weeks, though with school I'm not as good at that as I wish I could be (grad school is VERY BUSY). I check the water every so often with both test strips and the API water kit, and basically every time I have the same readings - no ammonia, no nitrates, no nitrites, ph is SKY HIGH. KH is always very low, and the GH is usually like around 16. Now, for the fish. I have quite a few fish in there (5-6 tetras, 8? kohl loaches, several otocinclus, 2 CPD and lots of shrimp and snails), but for a while i had been wondering if some have been going missing (a few months ago I got 5 ottos to fill out my school since I only had two, and now I'm back to two again, I got some neon tetras around the same time a while ago, and i think i may be missing one, etc). The fish in question is a celestial pearl danio, who is now in a school of two. The other CPD is a big bully who i believe bullied the rest to death - either way, I haven't seen them for a while. I saw the victim CPD hanging out at the top of the tank very briefly tonight. He wasn't swimming right (he looked a bit top-heavy), and it looked like there was a large, pale looking patch on his back - almost a V-shape. I tried my best to catch him, or even get a better view or picture of him, but he escaped into the plants quickly, and my tank is very heavily planted. I'll be doing a water change and updating this post with water values tomorrow, but what do you guys think? Should I treat for columnaris? Or should I wait and see what happens? 1 Link to comment Share on other sites More sharing options...
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