To get rid of nitrates quickly I have found that two additives work well for me.
One is AZ NO3 that was able to remove very large quantities of nitrates from my system, from ard 50-100ppm to between 10-25 ppm. The other one is Prodibio Bio Clean that I started using ard 1 mth+ back when my nitrates stabalised at ard 10ppm. Currently my nitrates are at 2.5-5ppm and doing 20% water changes every 1 mth+. My feeding is very large and some say crazy for a 3 ft tank.
I would suggest removing the coral chips from your sump as they trap detritus and can be a nitrate trap in due time. As for bio home and other similar media, I would skip these and just place live rocks in your sump instead.
Ceramic rings are basically non porous and thus not effective for housing bacteria.