So today I had to build a anti fish trap. I moved my clowns to the basement last week as I thought I'd see if they might be scared in the DT, sure enough I see them out more and wandering around so looks like the tang needs to be moved. But anyways, come home last night and found my Darwin in the bottom sump pump section, he had gotten him self into the drain of the 75' down the pipe, into the refuge, over the retaining wall and hit the bottom. He was swimming around looking very confused as to WOW THAT WAS ONE HELL OF A RIDE, CAN WE DO IT AGAIN!!! So I picked him up and put him back with his buddy in the 75' today I fabricated a skimmer addition out of 1 1/4 pipe. I really had no intention originally to put fish in the 75 but guess now I better redesign the system a bit.