In the past i have had fish jump into the corner overflow on occasion, but usually within a week they usually escape back into the DT. This time, my pintail wrasse has been in there for quite some time, and i am looking for any creative ways to get him out. I know there is the pull the standpipe method, i am just worried he won't make it into the pipe, and i don' have a good way to reach to the bottom of the corner overflow. (It is awkwardly placed). I have heard about sand/marbles into the corner overflow, but that would permanently reduce volume, and i am not sure i want to do that. I know i am reaching here, but just thought i would check.