Bio Pellets need to be changed or not ?

[reefermadness]

Originally Posted by reef93

I am using Vertex pellets too, and its recommended to change every 4 months. I know some people never change, they just add more pellets as reefmadness said. But some did, so it confuses me. I want to see how many people on canreef here are doing with the pellets.

Never heard this before.....it doesnt make sense...the whole pellet is made from the same material....why would you change it out? SOmething to think about is vertex will sell more pellets this way.

My pellets are SWC ...the cylinder type...PHA.