Vodka dosing?

[rastaangel]

vodka dosing once fine tuned works awesome, but dont expect over night results. It usually takes 2 months or so for it to work well and like mentioned a mess up can kill and/or make a mess in your tank

[msjboy]

aquaripure.com

their device is moreorless a vodka doser-denitrator but safely done as it is limited tothe filter itself... do a google search and read further the various threads/blogs on it.

msjboy