I'd love to get one mark but I am trying to save for a plasma cutter. Maybe down the road I will be able to grab one but right now this will do. And as for the galvanic corrosion... I found a nice 3 gal Poly tank I think will work nicely at a garage sale today for $3.00 LOL I mounted The pump to a piece of 1/2 7 layer marine grade plywood scrap I had layund around today to get an idea of the size of aluminum I will need for the bottom of the enclosure. will use 3/16 alum for that and 18 gauge for the sides and top once I have run tis for a while to see if it's going to hold up.

All in all for a grand total so far of $153 it's not a bad deal. time will tell. I still may weld up an alum tank but for now this poly tank fits the bill perfectly. not going to worry about corrosion at this point. will just us the defense coolant and see what happens. the pump has a primer hole so I can inspect the impeller through that hole from time to time. Wish I wouldn't have trashed my old pc water cooler radiator it would have worked perfect, it used 3 120mm fans but that size is avail in 120v also ~shrug