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#1
12-27-2012, 12:23 AM
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I'm running bio pellets, it's a recirculating reactor so the pellets tumble regardless of how much flow through there is, but it's possible that the outlet got clogged so not enough water was escaping the reactor. I just cleaned all the screens on it.
I also stupidly did not think of the emergency drain that is underneath my sump. It's in the world's least convenient spot so I don't pour water down it very often. I just topped it off in case the drain trap dried out and it was sewer gas that was escaping in to my cabinet, but that shouldn't have made the water itself smell should it? 
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#3
12-27-2012, 03:18 AM
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You can leave a bowl of carbon near the tank to help with the smell in the air too, plus a new refill in the tank wouldn't hurt.
Why did you leave the Elegance skeleton in the tank long enough for the tissue to all fall off? That's a lot of nutrient waste. Try collecting some water from the outlet of the biopellet reactor. If that is the source that water should smell very strong.
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#4
12-27-2012, 10:29 PM
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Quote:
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#6
12-27-2012, 03:20 AM
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I don't think carbon will adsorb H2S under normal conditions; Wikipedia mentions using carbon as a substrate coated with a catalyst for reacting the H2S into less toxic/smelly compounds.
I think your best bet is probably some light peroxide dosing. And maybe check that biopellet reactor for cleanliness, if it's clogged and that smell is the bacteria dying off...
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#7
12-27-2012, 03:36 AM
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If there is a high oxygen level in the sump (such as after the skimmer) then the H2S will be at least partially oxidized where it can be removed by carbon. If there is H2S smell in the air carbon will remove it. GFO will also remove H2S.
Last edited by Myka; 12-27-2012 at 03:41 AM.
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#8
12-27-2012, 03:47 AM
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There is this too... old, but still good info. http://reefkeeping.com/issues/2005-12/rhf/index.php
It mentions carbon and GFO, and gives you some steps to resolution.
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#9
12-27-2012, 08:12 AM
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I deal with H2S a lot at my work although in considerably larger quantities than an aquarium tank will release and one of the easier ways to get rid of or diffuse the H2S is to have a continuous airflow with fresh air. All is required is a standard house fan and a source of fresh air IE. another room, fresh air from outside or just circulate throughout house. You can smell as little as 2 parts per million of H2S and while not generally harmful at those lvls prolonged exposure will give you symptoms but over a period of days anything over 10 parts is considered to be detrimental in as little as 8 hrs.
However that being said if you feel nauseous or have a headache from the H2S smell stop circulating the air immediately and go outside for fresh air and drink plenty of water till you no longer feel nauseous or headache has gone fresh air is the best and easiest way to diffuse H2S I don't think aquarium tanks will produce enough h2s to cause those issues but you never know.
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#10
12-27-2012, 10:27 PM
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So it looks like We've solved the problem, it was the drain trap in the emergency drain under the sump that had dried out.
With all the people that have been here, I didn't open the doors to the cabinet for several days, so the sewer gas was building up above the sump for who knows how long, and enough of it must have diffused in to the water to make the water smell. I siphoned some water in to it, and the smell in the house was gone in an hour. I switched my GFO reactor to a carbon reactor, did a 50 gallon water change, and the smell is now completely gone from the water. A couple corals have bleached a little, but things seem to be ok as far as I can tell. I'm going to need to remember to fill that drain on a regular basis.
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