Copepods escaping into DT!

Well. its just one of those converted HOB filters and it looks like they all jus float over eventually if their not stuck in the rock or substrate. I have the flow turned all the way down too, am I shocking them cause I just take em out the cooler and dump em into the running fuge. I tried turning it off for a while and then added them but after I plugged it back in I didnt see no more. I think with the little bit I have left, culturing them would be best, besides I have a 10 gallon tank sittin in the garage and a couple extra air pumps. All I think I need to get is some phyo feast I think now as a food source to keep the water green etc. I don't think they require much else and I can keep em at room temp, but I will do all my research first. Maybe I can sell them for cheaper locally to reefers too if I get a good system going.