I have some sick albino corys. I cannot seem to keep and albino cats for long. I have a 29 gal tall, with good water paramiters, 7 lemon tetras, 1 common pleco, 2 small plecos, 3 red-wag platties, 1 kuhlie loach, 3 other tetras, and 7 albino corries. When I first got the corries, about 6 weeks ago, they were happy and loved to play in my bubble wall. Now they sit around all the time and I found 1 dead this evening. This is the 3rd time I've tried to keep albino corries. The LFS told me that everyone has 1 fish they cannot keep...mine may be albino corries. I'm really sad they keep dying. Any suggestions?