Mold in my S/H!!

[Pals]

Originally Posted by Oldguypops

I am having a similar occurance with my terra cotta pots. I have noticed a white line of what appears to be mildew starting at the base of several of my pots and spreading upwards. I can completely wipe it off with a damp cloth but it will be back in a week or so.

Ah, now we're talking colours (colors!) so we can almost see what we're talking about without photos!
The white line is more than likely to be calcium/mineral deposits because you water with tap (fawcet!) water which is hard?
(Okay, so I'll stop with the english translation, it's beginning to annoy me too!)
Do some of your leaves have a slight, hardly noticeable white edge to them, particularly those you've had a while? This is also from mains water spray, running and remaining on the tips of the leaves, evaporating and building up a fine deposit after time.
It's said that this long term hard water does no good for orchids because it clings to the roots preventing them to function properly.
I suppose a test would be to select your newest orchid (with no white line) and only water that one with rain or distilled water, see what happens. No white line, it's your water - white line, it's probably the pot!
So don't worry Oldguypops, you're NOT going mouldy just yet!

Pals