I just picked up and awsome Emperor from my lfs in full adult colors. hes about 5-6" and eventually going into my 210 DT. I was planning to qt in a 55g but the bottom plastic frame on the qt broke and cant find a replacement frame. I'm afreaid to use the tank without the bottom plastic frame. I do have a 20g QT thats fully cycled. do you think he will be stressed in a 20g long qt? If i notice that hes stressed i may have no option but to put him in the DT. Note my lfs held him for three weeks for me.