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- Apr 18, 2019
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Anyone else seeing issues with the recirculating area reducing skimmate?
Hey Randy,Hey Reefers!
Huge shoutout to @Velcro and @JDowns for inspiring this episode!
Does recirculating your CO2 scrubber save media? It just might...and thanks to those reefing pioneers who are paving the way in testing this theory, we're getting some solid info that it can actually work.
I've been running recirculating for about 4 months now and have not noticed any performance degradation in my Reef Octo skimmer. Still fills in 3-4 days with a thick, tasty sludge. That said, the skimmer is very undersized for the volume and load in this system so that may have something to do with it.Hi, Roger with Tunze here, so I was sent here by a customer I spoke to at RAP NY. Some years back, a competitor of ours did something we were intrigued by as it simplified skimmer design and reduced cost, they essentially used the skimmer cup as a silencer and took the air from the skimmer cup. We bought one and tested it and found it performed poorly. We had a hunch that the decomposing skimmate created gasses or possibly just the high humidity of the skim mate and popping bubbles was affecting skimming. We tested this by A) taking one of our skimmers and rigging it to draw from the cup and B) taking the competitors skimmer and rigging it to a conventional silencer to take in fresh air. The results were fairly convincing that this is a bad idea. We still don't know why, but by our testing, taking air from the skimmer cup seems to impede skimmer performance. From some cursory research we strongly suspect that methane and sulfur compounds reduce the surface attraction of the bubbles, these large molecules do not lend themselves in the same way to being charged by the ionic soup of saltwater and picking up organic matter as just plain O2 and N2. FWIW, said competitor likely noted the same as they no longer do it this way and we know of no manufacturer who takes air from the skimmer cup though we kept this study a secret as we had no interest in helping someone else improve their products. I would be very interested to know if anyone who has done this has seen less overall skimming as a result.
I don't want to know how you found out it was tasty.I've been running recirculating for about 4 months now and have not noticed any performance degradation in my Reef Octo skimmer. Still fills in 3-4 days with a thick, tasty sludge. That said, the skimmer is very undersized for the volume and load in this system so that may have something to do with it.