Phalaenopsis in Marble chips needs help

[LovePhals]

I potted my phal in mostly marble chips with some bark. It does not seem to be doing well and it now has rotting roots. The top roots are beginning to look dried out. I am really hoping to save it as it is a recent purchase and beautiful phal in full bloom. I need to act quick and not wait for new potting supplies. I have bark/perlite/charcoal mix as well as sphagnum on hand. Should I change it again and take out of marble?
Does anyone grow in that potting medium successfully?

[ELORCHID]

I would cut off as much of the rotting roots, wait a day to let the cuts heal a bit, and repot it in a bark mix. Try to keep the plant on the dryer side to let the cuts heal. Some of the buds might blast, but at least you'll save the plant.

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[Ray]

Get it out of the marble chips!

Marble is a generic description for a range of calcium-magnesium carbonates, and while plants do need both calcium and magnesium, planting in it exposes the roots to a much more basic pH than the plant likes, and excessive exposure can actually block the uptake of other nutrients. At the very most, marble chips may be used as a small additive to mixes for plants that need extra, but a phalaenopsis is not in that category.

Personally, I'd take you bark mix, add maybe 10% sphagnum, and use that.

[LovePhals]

I have several phals that do so well for me, not sure why I tried this. I really hope it will recover.
I repotted into a smaller pot with bark as suggested and I hope my phal recovers. Thank you for the advice. Here is what I have left. Do you think it's enough?

[ELORCHID]

I'm no expert, but it looks good to me.

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[LovePhals]

Thank you so much for everyone's help. My phal pulled through despite my abuse and even opened it's last two buds without blasting. I am losing the bottom 2 leaves, leaving it with 3 leaves. I cut most of the spikes off, but it still has two one of which is in flower and one spike now starting buds. I am trying to decide if I want to cut all those off or let it do it's thing. It still has several viable roots left although I did kill most of them.

[No-Pro-mwa]

Glad it pulled through. Not sure what to tell you about cutting all spikes off. I rarely can.

[RosieC]

Glad it looks like it's pulling through. I didn't know that about marble chips.