Canister Reefing: the art and science of keeping mixed reef using canister

I have been reefing from 2004 – 2008 and 2014 till now (2018). During both times, I have been using canister filter for my reef tank. Most of the reactions I got from fellow reefers when they heard that I am “still” using canister are comments such as “canister is a nitrate factory”,