Best CO2 Absorption Media

DeputyDog95 · May 19, 2023

GarrettT said:
I use shopmedvet media on a recirculating skimmer. I get about 7-10 days out of it. I’m sure if I used a bigger canister I could extend this. You can’t go by change in color, as if I’m not mistaken, it will turn back white after a while.

I was using the BRS media initially, but I just switched to Icecap to try that out. When the BRS media was completely exhausted, it didn't change color a bit. Basically my pH starting falling off rapidly and that was my clue

Sleeping Giant · May 19, 2023

Thread 'Recirculating CO2 Scrubber Skimmer Cap' https://www.reef2reef.com/threads/recirculating-co2-scrubber-skimmer-cap.953178/

DeputyDog95 · May 19, 2023

Sleeping Giant said:
Thread 'Recirculating CO2 Scrubber Skimmer Cap' https://www.reef2reef.com/threads/recirculating-co2-scrubber-skimmer-cap.953178/

That's a clever idea, but I'm guessing you would be changing the media constantly with a scrubber that size.

SpyC · May 19, 2023

I use jovet soda Lime 5 Gallon from amazon. Lasts longer than ice cap for me and is cheaper.

Sleeping Giant · May 19, 2023

DeputyDog95 said:
That's a clever idea, but I'm guessing you would be changing the media constantly with a scrubber that size.

no idea how it fully works, @Projects with Sam would know best

Projects with Sam · May 19, 2023

Sleeping Giant said:
no idea how it fully works, @Projects with Sam would know best

Hi! I've only had to replace it every 3 months or so. Its not a huge PH boost but that may be because there is only a few cups of media in mine (140mm). the larger skimmers have wider lids. I've also thought about making a taller one but no one has requested it.

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Necrodaemus · Feb 22, 2024

takitaj said:
I run a recirc setup on an Octo skimmer. You don't have to, nor want to, block any other holes. Works great, sometimes too good and I have to open the valve and let in some room air when it hits 8.5.

I use the BRS media and have to change it maybe once a month in a 10" scrubber.

I know this is an older post but hoping to gain some insight on your statement about blocking any other holes. I’m getting ready to install a 3D printed recirculating ring from Fish of Hex, and it comes with small caps for closing off the vent holes in the lid. Is this what you were referring to? No need to block the holes?

Projects with Sam · Feb 22, 2024

Right. Because the skimmer is drawing in the air, it won’t expel more air then it sucks so there should be an equilibrium and no holes should need to be blocked.

I actually purposefully leave them unblocked on my recirculating co2 scrubbing skimmer caps so if there is a skimmer overflow it will still drip out the top of the skimmer…

CO2 Scrubbing Skimmer Caps

Recirculating CO2 Scrubbers that sit right on your skimmer. 3D printed skimmer cap that recirculates protein skimmer gasses through soda lime to scrub it of CO2. The cap is designed to sit on top of your existing skimmer cap. It has an air gap and ports to allow overflowing skimmer liquids to...

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