I was about to bet they were Astronomiks the moment you used the word Halos. I had halos, switched to Astrodons and the halos went away.
http://www.astrodon.com/products/filters/narrowband/
The good news is that they have acknowledged the problem, and you might get a free upgrade, see here:
http://www.astronomik.com/en/news/as...r_halo_problem
Alternatively, you could try adding an IR filter and see if the halos disappear.