I have a customsealife 1/5 hp. flow through chiller with connections on top. Im of the opinion that it does not make any diff which direction the flow goes through the unit. I would sure appreciate comments on this item. As you know customsealife no longer exists. As you look down into the openings, on one side you can see part of a stainless coil bend and on the other you cannot see any of the cooling parts. Just thought Id throw it out there, never too smart or old to learn something. Also your thoughts on flow rate would be appreciated. My opinion is 350 to 650 gph. Any comments appreciated. Thanks in advance.