Transitioning long/petaled phrags into S/H

[Dekejis]

Hi everyone! I've been a lurker here for a while and I'm going to jump on and join the conversation.

I've got several phrags which are mostly of the long-petaled varieties, and i'm wondering if they can be transitioned over to S/H. I've repotted several of them up already in a mix of hydroton and rockwool cubes and have them sitting in a tray of water with an airstone oxygenating it with my fingers crossed.

So on to my first question - is using the hydroton/rockwool mix likely to be too much moisture for these? I currently grow in my garage and have in the past summered my plants outside - so the humidity varies quite a bit, as does the temps. I'm hoping to eventually set them up in a grow tent, but that's a project for later. I've been reading up on the threads discussing using these two medias in a mix and I'm hoping that this will help with dryness on top - I tried out S/H some years ago without success because I really struggled with the LECA drying out on top and I couldn't keep up with it.

My goal is to come up with an easy to care for setup wherein all my plants are growing in the same conditions and those plants are able to hold their own and tolerate a little more neglect than bark mixes. I am typically SUPER busy, and the idea of S/H has always appealed to me.

I have some straight caudatum plants that I'm also hoping to transition - perhaps a little less rockwool in the mix?

Second question - I've added a layer of rockwool cubes on the top to encourage moisture retention in the mix below and also encourage rooting by retaining humidity at the top - is this a bad idea? Am I discouraging airflow by doing this? Should rockwool not be touching the green parts of the plants?

Any suggestions for making the transition more successful?

**EDIT: Ok, like a twit, I opted to switch a couple of my caudatums over into S/H (using much less rockwool in the mix), and these guys don't have any new roots starting. Should I switch them back over to bark mix and wait?