I've been running the ATI disposable carbon dioxide scrubber since the 21st June 2017 during which time I've used up 3 units. The first one lasted for 12 weeks and 2 days which I thought was a decent amount of time for the cost. The tank pH was higher and more stable so I decided the experiment was worth continuing. An additional 2 units were purchased, the second unit lasted for 13 weeks and 3 days, still good, but the third unit exhausted in just 2 weeks! So what had changed (assuming the unit was not faulty somehow)? Well the skimmer was replaced, the windows in the house were closed because it was extremely cold outside and there were a few more people visiting due to it being Christmas. Aside from the lack of fresh air and more CO2 being breathed out the new skimmer pump is clearly pulling a lot more air than the old one and you can see that from the amount of bubbles being produced in the skimmer body.
So what to do? A two week run time for the disposable unit is no longer cost effective for me but I do like the higher pH levels that the scrubber produces (and so apparently do my corals if you take the increase in Alk/Ca usage into consideration). In the end I decided to scrap the disposable idea and try a refillable unit instead. The 4l refillable unit that ATI produces is just too large to fit inside my cabinet so I decided to give the Fauna Marin Skim Breeze a whirl instead. This unit holds 1l much like the ATI disposable version but can be refilled with fresh media when the old stuff is exhausted. It comes complete with 1l media to begin with and when that is used up I intend to refill it with a medical grade CO2 absorber called Spherasorb. I'll see how that pans out and report back later on.
Hi, my name is Lisa and I live in Derby, UK. I am a self-confessed reefaholic!