I've had the Helikon and now a Lyra Argo. Jonathan Carr of ScanTech who designed the cartridge and the distributor, Immedia, both recommend the Lyra SPT liquid cleaner and NOT the Zerodust.
I've used the Lyra SPT for two years and never a problem. Just take your time and use as directed.
I've used the Lyra SPT for two years and never a problem. Just take your time and use as directed.