I use aquaclears and the suction cups on those still stick and Ive had them for a little over a year. They seem to last a good bit. If you keep up with maintenance on your powerheads and keep the suction cups clean they should last a long time. 
__________________ Clarence  55g sumpless mixed reef(soon to be 120g)
DSB(2 to 6 inches)aprox. 80 lbs,LR aprox. 60 t0 80 lbs.,Coralife 220 Protein Skimmer,CPR HOB Refugium with Fiji Mud Member of TRS Member of SDMAS
RIP Sarracino Ciro 12/16/04 - 4/3/08 | 
