So, I bought into the Current system for a 75 gallon tank because I though it was cool as advertised. Yes, these pumps are a pain. I wouldn't take them for free unless I was driving by and you could toss them through my window as I passed. Please, this is nothing against you and your situation. I feel for you and in part I blame myself for your purchase. I know I'm not helping you get rid of them.
I am sorry you got stuck with these. I wish I had written a review of my experience with Current stuff. The lighting is not great either. I have a 75 gallon tank that is running that I don't really have time to do anything with because it's just got this partially working stuff on it. (It breads dalmatian mollies like crazy, though!) It's not really big enough for a FOWLR tank, but it won't really support any coral.
Actually, If I were in the area I would pick them up and keep them around to give to someone to start off with if they had very little money and needed to skimp on something for the fist 6 months.
I will try to make it out there on my next run and hope we can both pay it forward and set the expatiation for a new reefer that has a limited budget, if someone hasn't picked them up by then.