Over watered cactus

[Meagan]

So sad... can anyone help? I over watered a cactus, and I realized that there are brown spots growing all over now. Then I noticed that one of the arms are schriveling up, and FAST! What can I do?

 

[Dyflam]

I have had some luck by planting in pure sand. If it's not too far gone that might help. Good luck. Maybe someone else will have some other advice.

 

[Meagan]

In the meantime... what do I do with that schriveling up arm? leave it alone or cut it off?

 

[Dyflam]

I guess I would cut it just below the damage.