Is my phal orchid rotting?

[Julia17]

Ok so this phal has been to hell and back. I've posted here before, my first orchid died because it couldn't recover from root rot and fungal infection. This is my second one, which I had given up on a LONG time ago.

The story is: I totally forgot about it because I thought it was dead, then one day I noticed that a leaf I had accidentally broken off during repotting had grown substantially, and there was a new leaf coming out. I wish I still had pictures to show. The large bottom leaves were all limp, because they hadn't received water in a long time.

I decided I'd try and revive this thing given it was such a fighter! I've recently lost one of the limp leaves due to natural causes. In the last few weeks, that tiny leaf has grown A LOT. It's also put out a lot of new roots (i've given it rooting hormone because it had a poor root system) but the problem is, they are turning black and they stop growing.

Today I noticed a tiny new leaf coming out, and what looks like a new green root tip coming through. I don't want this one to turn black too, you can see in the pictures how all the other root tips have just turned black.

I would love some advice on what to do. I'm pretty sure it has hectic root rot going on, but it's also growing like CRAZY! Would taking it out of the current media stunt that growth or even kill it? I don't want to repeat the same mistakes I made with my previous orchid, where I kept messing with it trying to get rid of the fungus.

I would really appreciate any advice on this. I think I can save it, given how much it's been growing! Thanks a lot!