I got an old PC Graphic/chipset heatsink made from copper that was round. All i did was dremmel it in two and use thermal glue then pasted it to the original heatsink. In my tank i couldn't add a larger deeper heatsink like in the above as the hull restricted the size. I was wondering if the original heatsink could be flipped 180 degrees so it will allow a biger sink to be added ?