Easy care setup for present

[tokyo]

I understand that this is not an ideal situation. But making a self sufficient system is part of the challenge.

Also, without a self sufficient system I might as well keep the orchid for myself.

So I am determined to get this to work.

If I used a low power aquarium air pump to pump air into the medium would this help with aeration? Or would the direct flow of air damage the roots?

As far as the nutrients toxifying, what if the water reservoir held just water with no nutrients and the nutrients were added to the 1" at the bottom of the system? I would have to figure out the right amount to add so not to end up with too concentrated a mixture, but this would allow nutrients to be used without having them sit for an extended period of time.

The only thing is I'm not sure how important it is to have a constant supply of these nutrients. would it be enough to have nutrients added twice a month? The nutrients would stay in the water for a while and just become more and more diluted as new water was added.