@DraDiana
@needrain
@Hamwild
Thanks I think I am minded to leave them alone as far as the knife is concerned. Nothing appears to be in major crisis yet (although things could change now I have actually watered ) a lot of the collection was also infested with mealy bug , some in quite an epic way . All have been treated but I need to be careful I don't introduce a problem into my own collection. Once they dry out from the watering I am going to unpot , treat again and repot into fresh soil . These next few weeks will be critical fingers crossed most get through it
Steve