Euro Reef has been playing around with among other things new rotors. Apparently trying to get the rotors to become silent among other things (no kidding?). “We have been working on a new rotor assembly design that can be used on the RESUN/ GEN-X pumps we have been using on our RS Series skimmers. The goal has been to develop a rotor assembly that will be balanced and VERY quiet as well as yield an excellent result in pump performance and It’s actually quieter than the EHEIM 1260/1262!!”
“The entire assembly for an SP4 pump. The rotor magnet is REP (Rare Earth Phosphor) and incredibly strong. “
“The shaft by itself. Made of Zirconium ceramic for maximum impact strength and durability, the surface of the shaft is polished to an SUPER high gloss ensuring a smooth ride for the bearing.”