Advisability of cleaning mounts w/ Sprite (TM)?

[gnathaniel]

A number of my treefern mounts are showing signs of salt build-up, which I know quickly becomes toxic and seems to be one of the major reasons a lot of people avoid treefern...

Anyway, I mentioned this to one of the guys at the local gardening store where I get my orchid supplies, and he recommended that I try soaking the mount and plant in Sprite (TM). I guess the mild acidity is supposed to dissolve the salts from the mount without hurting the plant?

I think the sugar in the soda would be good nutrition for the plants, but I'm a little concerned that if I don't rinse it out of the mount well it might encourage fungal or bacterial growth. Can anyone else think of possible drawbacks to doing this? Thanks!

--Nat

PS no I don't work for whoever makes Sprite (TM)