Ahhhhhhhh, the I hate my suction cups thread. I too dislike suction cups, this is why I switched to neodynimum magnets. You can get these at Kjmagnetics.com, or where I got mine from gaussboys.com. They come in different strengths. Very strong and if plasic coated will not rust. Mine have been on my powerheads almost a year, and am very pleased. Someone on here said they used a spray....plasi-dip from home depot to coat their magnets. Not sure if they are good, do a search on this site for more info.