Killing the Canister Fitler Myth

[mark]

Why even the light? Though recently put some macro in my sump went years without any, only just in the display.

[Fish]

I wanted to keep the macro in the sump because I wanted to light it 24/7 and avoid some of the lights on lights off ph swings. Plus, I was a little cramped for room in my display - the ball of chaeto that I had in my canister would have filled the entire tank

- Chad

Edit:
I should have made this more clear from the start. I am just suggesting that using a canister filter for mechanical filtration the way they are set up can lead to build ups of nitrates. I am suggesting throwing in LR and using it as a biological filter instead.