Canister and matrix

[knap_123]

I'm thinking of adding a small canister filter. And 1 liter of matrix to my seahorse tank. I run matrix in sump. But feel I need more due to heavy feeding. Seachem rep said this would be ideal way of using it.

 

[ReeferReefer]

I would put filter floss on top and change it every other day if I was going to run a canister. If not cleaned often they can become nitrate traps for sure.