gac

We are frequently told that the sorption window for granular activated carbon (GAC) is 3-7 days at which time the GAC is spent and should be discarded. This is true for medications and toxic pollutants that you either need removed immediately or that are not effectively processed by biological...

I'm wondering how long activated carbon will last. There are different instructions out there for various products and in many posts about the topic, some even claiming "can create some problems if left more than about 60 days". I use Coral Essentials Activated Carbon in a media bag put into the...

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...