I have decided to keep the 125 and I guess the cuttles are content with that. These past few days they have ventured out a lot more and are more visible. They have found the end of the tank where the common shore shrimp stay and know that it is a good feeding ground. When they are out in the tank they seem to grow so much faster and I am now thinking about getting a few of the smallest fiddler crabs I can find to see if they hold any interest to the 4 cuttles I have. Another order of the shore shrimp is on its way.