Review on 🐠 Seachem Matrix Bio Media 250ml: Optimize Aquarium Filtration with Top-Performing Media by Stephanie Bourque

I have a Fluval c3 filter, I always buy Fluval filters and biocarriers. After some research I decided to swap my cnodes. You don't want to change all the nodes at once, you want to mix some of them with your old ones to get the beneficials. I've been waiting to write a review to see how it compares to fluval knots and all I can say is wow. I used to think my water was clear, but about two hours after the switch it became very clear.