Hello,
I am having a difficult time keeping corys. I have tried panda corys and recently the julii. I never see any of them swimming oddly or ill, my Cory count just goes down after 1-2 months. I do have one Panda Cory that I have had at least 8-10 months. I have a heavily planted 40 gallon community tank that is under stocked with rummy nose tetras, platys, red cherry shrimp, and a bristlenose pleco. I do weekly water changes: pH close to neutral, nitrates kept ~5-15 (that works best for my plants), I bought 3 julii 2 months ago and there were still 2 last week but I think I am down to one. Maybe corys just don’t do well in my tank? I feed frozen foods, sinking algae wafers, sinking shrimp pellets. Any advice?