My gfo is on the bottom which last longer than my carbon. So My change rate is 2:1. I just undo the reactor, flip it upside down and shake lightly, dump the carbon in a bowl. Push cartridge back down, rinse carbon and reload. So yes. It is easy to change. No more fighting trying to unscrew something, no more water leaking when I undo it and I can clearly see what going on inside it. I actually just got done changing both out. Took less than 10 minutes but I wasn’t in a rush.
Excuse the bubbles in the pic. I wiped down the sides too. It makes bubble for a day or so until it gets a film on it. No micro bubbles.