As the title suggests; How achievable is a Nitrate free environment. Say, for instance, you have Nitrate removing equipment to provide the tank with Nitrate free water at water changes but you are dosing ferts for your plants. Add these Nitrogenous compounds to those from organic matter in the tank breaking down, what are the tools available to use up these compounds to have a 'complete' Nitrogen cycle in the tank? I'm asking as I'm trying to get an insight into how easy or difficult is is to achieve? Whether it can be done on a budget or whether it's a costly task?