Hi. I have a 15in ck and he will be getting either a 100 or 125. But i will try for a 180 as well. I was thinking of a jardini as the only tankmate. Do you guys think my ck will be fine. I dont want the jardini killing the ck. He has lived with other big fish and hasnt really fought. If not a jardini, then what other suggestions do u have? I would like a fish around a 2ft max. Thank you.