gac

Hey Guys, It's a pleasure to e-meet you all, I'm Francesco, I'm a fellow reefer from Italy and this is my very first post. I have a question regarding GAC and iodine number, by digging a bit further into the various type of GAC, aside from the raw material they're made from, I understood that...

As Randy points out, carbon removes more organics when combined Ozone. Conversely, I've read at least a couple of times that Purigen "stays white" much longer when combined with ozone. This suggests Purigen does not remove as many organics as it would without ozone. An example here...

I just bought this Sander skimmer, blueprint below, to use as an ozone reactor, because it was 80% off, 26 inches tall, very small footprint, and ozone-safe (Sander also produces ozonizers in Europe). I've read Randy Holmes-Farley's articles on ozone, but it's my first time using it, and I'd...

Before you ask, I've watched all BRS videos ever made, so no "yellow water method" please. I don't think "yellow water" is a proper way to measure GAC efficiency. That said, BRS states that GAC usually works for a week max, becoming highly porous bacteria substrate after that. That makes sense...