I think that I am going to go with this Tom Barr's low tech method outlined here
I wish I could help you decide what fertilizer you should use for your setup. In my emersed tanks, I don't dose any ferts. Instead, I just used a potting soil mix from a greenhouse that has slow release fertilizers in it. It's worked out well so far.
I probably should have gone with regular potting soil with a sand cap. Good luck, and please let me know how the ferts go! So far things are growing well, so I think I'll leave well enough alone for now.
Last edited by bluestems; 03-08-2013 at 08:02 PM.