RIDOMIL - I think its called - ask Shannel Courtney (scourtney@doc.govt.nz) BUT frankly nothing really works because Albugo occurs as an asymptomatic infection in Lepidium anyway - what I am saying is that when you see the white pustules that's the sexual phase but its probably been in your plants long before that stage appears. I find over feeding your plants works best - as they seem to outpace the Albugo (for a time anyway)