Kim Nancarrow

Thank you! I will take a look at the temp and see if it would make sense to turn it down a bit. I knew it was at the upper end, but since it's technically within parameter, wasn't too worried. I have two airstones, so at least there is that. 🙂

Hi everyone - thank you so much for your responses. Nothing hard on the substrate - all of my rocks are rounded. Maybe my drift wood? But, nothing visibly sharp or immediately concerning. I did move all my corys from my other tank a couple of weeks back as my pair of apistogramma macmasteri were killing them (never saw anything, but they have a history with corys). So, it could be an injury that I didn't see from that. He/she was swimming listlessly at the top of the tank pretty much all day - very different from my other corys. He/she also had very little reaction to the net when I corralled him/her to get a better look. Did not respond to food when put in the tank. Just keep swimming at the top. Temp 77.2 F Nitrate 50 Nitrite 0 Hardness 300 Buffer 70 pH 7.2 Chlorine 0 Thanks again for your expertise!

Can someone please help me identify what is going on with this guy? I don't know and therefore don't know how to treat. Everyone else in the tank seems fine. Please help!

JW - I took your advice and moved them back to the small tank. I did lose another one before that. 2 left - not the group #s they like, but maybe I will be able to save them.

Hi Colu - thank you for your response. I am new to corys, so I am not sure about the rapid breathing - I have not noticed any stringy poop though. I lost another 2 last night. I decided to move the remaining 3 back to the small tank with the betta. At this point, I am not sure I can save them no matter what I do. 😢

Hello! I got 12 hasbrosus corydoras and a male and female apistogramma on 02/05/2022 - they went into my 10 gallon quarantine tank to start. Everything was fine until 02/14/2022 - when I lost my first cory. At that time, I started a maracyn treatment just in case. I lost a cory a day from 02/14 to 02/17. Then, everything was fine for a few days (I thought the treatment was working), but then I lost another cory on 02/21. On 02/23 I decided to chance it and move my apistogrammas to the 75 gallon even though quarantine wasn't up. I thought maybe the apistos were doing something - though I never personally saw aggression. I didn't lose a cory in the small tank after that (02/23 to 03/05). On 03/05, I moved the corys to the 75 gallon (with the apistos) - as I put a betta in the 10 gallon. There are also 12 cherry barbs, 19 neon tetras and 3 green dragon plecos in the 75 - so, not overstocked. It is fairly heavily planted with lots of hiding spots. I thought that the corys would have enough places to hide and the tank was large enough to allow some separation. Today, 03/09, I had another dead cory. There are only 5 left in the 75 gallon. What is going on? Are my suspicions that the apistos are murdering them correct? Should I move the remaining 5 to the 10 gallon with the dumbo betta? Water parameters are as follows (they generally stayed about the same with nitrite elevation during the maracyn treatment that I combated with water changes): 10 gallon - Nitrate 50, Nitrite 0, Hardness 300+, KH 120, pH 7.6, Chlorine 0, Ammonia 0, temp 77.2 F 75 gallon - Nitrate 35, Nitrite 0, Hardness 300+, KH 120, pH 7.6, Chlorine 0, Ammonia 0, temp 76.3 F There are no visible bite marks, missing fins or otherwise on the little cory bodies. No sunken or distended bellies. Please help me!