rusted piano strings

[Farrell]

FWIW: My DC dehumidifier-equipped grand piano at my home has not string or 
bottom cover and the DC system is very effective. I keep the lid fully 
closed most all of the time. Also, here in Florida, we don't get the extreme 
RH swings that more northern climates have.

Terry Farrell

----- Original Message ----- 
> There is some benefit to a grand DC system without the covers. It's much
> better to use them, and I will no longer install a system without the
> bottom cover.