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Marine Ornamental Fish & Invertebrate Breeders • View topic - Economics of a Sulfur Denitrator?

Economics of a Sulfur Denitrator?

Economics of a Sulfur Denitrator?

Postby William » Fri Jun 29, 2007 11:52 am

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Postby mpedersen » Fri Jun 29, 2007 1:31 pm

That's an interesting question. I can only throw in that Joe Lichtenbert attributes the use of "chemical" denitrators from the DAS (Dutch Mini Reef) aquariums to his early success at RPI (it was the type where you fed it alcohol I think). On the flipside I don't believe Joe is still using denitrators on any of his systems, but I could be wrong.

I can say that I recently built a denitrator to run on a small, overstocked aquarium here at home, but for 2-3 months I haven't seen any significant pulldown if any at all.

I would guess this question should be analyzed in the most basic yet complicated sense; what are the limiting factors of fish culture? Space, Gas Exchange, Waste Management and Disease Control. Any others out there? Basically, if you can use a denitrator to keep nitrates down, it not only saves you money on salt / water changes, but may actually help you raise more fish per gallon of water than you could without it...

VERY interesting question!

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Postby FuEl » Sat Jun 30, 2007 4:43 am

If the denitrator is not working, you probably need a bigger unit. :lol: When I first fixed up mine to my 50 gallon system, nitrates dropped from 50 ppm to 5 ppm in a week. A week later, close to zero. I will still go with the water changes though, kind of worried about the sulphates produced.
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Postby vaporize » Sat Jun 30, 2007 9:11 pm

Maybe Dman can jump in, I know he tried many methods including various denitrifiers, at the end, he end up using a remote DSB with some success.
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Postby William » Tue Jul 03, 2007 12:37 am

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Postby miska » Thu Sep 27, 2007 5:12 pm

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Postby Clownfish75 » Thu Sep 27, 2007 5:48 pm

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Postby Jens Kallmeyer » Sat Sep 29, 2007 8:21 am

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Postby FuEl » Sat Sep 29, 2007 9:17 am

I love Artemac!
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Re: Economics of a Sulfur Denitrator?

Postby EasterEggs » Wed Aug 31, 2011 3:22 pm

I know this is an old, old thread. Any updated information?

I happen to have a sulphur denitrator sitting in my fish room. It was previously used (by someone else), but now just sits there. I am building two growout banks both with large protein skimmers. I was thinking of putting this sulphur reactor on one bank and use chaeto on the other bank to see what the comparative results are. My growout banks are about 180 gallons each total capacity.

Having never used a sulphur denitrator before, what precautions should I take? If I rinse the old media in tap water (or RO?) can I still use it? It sounds like the reactor will need regular cleaning, I don't mind that. It also sounds like I might want less flow running through it, should I hook up a MaxiJet instead?

If this is really such a bad idea I can pull the Eheim off to use as a return pump and I can use the reactor for something else.
Last edited by EasterEggs on Wed Aug 31, 2011 7:32 pm, edited 1 time in total.
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Re:

Postby johnrt » Wed Aug 31, 2011 4:24 pm

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Re: Economics of a Sulfur Denitrator?

Postby EasterEggs » Wed Aug 31, 2011 4:45 pm

John, you might be better off PMing, this thread is from 2007. I bumped it up to see if there were any new experiences using the reactors. :)
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Re: Economics of a Sulfur Denitrator?

Postby Clownfish75 » Wed Aug 31, 2011 5:28 pm

Hi Guys

Eastereggs the sulphur filter will still work, rinsing it in tap water is fine, they will develop their anaerobic flora very fasts o the freshwater wont hurt them.

Personally i wouldnt run one without a ORP controller so you can dose the filter justt he right amount.

JohnT the algae scrubbers stuffed up the egg quality so i had a big drop in egg viability this could be removed by carbon addition till the carbon ran out then it would return to poor egg health, when i removed the algae scrubber the egg quality issues disapeared.

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Re: Economics of a Sulfur Denitrator?

Postby PaulG » Wed Aug 31, 2011 6:26 pm

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Re: Economics of a Sulfur Denitrator?

Postby Rocky » Wed Aug 31, 2011 8:11 pm

That is interesting information. Have anybody else had this experience? I too have built an algae scrubber, but I certainly don't want to use it if it causes harm to the eggs.
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Re: Economics of a Sulfur Denitrator?

Postby EasterEggs » Thu Sep 01, 2011 11:41 am

Given sufficient thrust, pigs will fly just fine.
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Re: Economics of a Sulfur Denitrator?

Postby Clownfish75 » Thu Sep 01, 2011 5:09 pm

Easter, yes to monitor the ORP inside the chamber and then you hook the supply pump up to it and it doses water to the unit to keep it in the ideal range.

Paul and Rocky

Macro as in caulepera is pretty useless i have found, cant even control small fish tanks so i doubt it will come tot he party on a breeding setup. Maybe if you grew something different you might get a different result.
I cant say 100% for sure that all algae scrubbers will influence the egg quality, but a commonly accepted condition of algae growth in reef tanks is that they will pump organics and toxins in the water to help them compete for space. The increasing concentrations of these can and likely will cause issues, hence why the carbon worked.

I should point out that i had the broodstock and growout linked at the time, as soon as i split the system into 2 so the growout kept the algae scrubber and the broodstock lost it, i solved all the issues, not to mention the water quality management was much easier without the load of the growout.

I dont think the growout was the reaosn the broodstock had eg quality issues.

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Re: Economics of a Sulfur Denitrator?

Postby EasterEggs » Thu Sep 01, 2011 6:07 pm

Ok thanks for the clarification Christian. :)

How about Chaeto for macro harvesting? I have used it on reef setups with really good results. Most people don't design a good "chamber" in the sump for the Chaeto so they really don't get the benefit. Simply adding a clump of Chaeto and a light does not a good denitrator make! From what I understand, Chaeto is not aggressive like some algae that Christian is describing that release toxins. Makes sense regarding the egg quality inhibition.
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Re: Economics of a Sulfur Denitrator?

Postby William » Fri Sep 02, 2011 9:17 am

Christian,

What exactly was the problems with the egg quality?

Reduced # of eggs? Eggs died before time to hatch? Eggs did not hatch? Hatched weak and died shortly after?
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Re: Economics of a Sulfur Denitrator?

Postby Clownfish75 » Fri Sep 02, 2011 9:27 am

HI Will

Eggs died before time to hatch? Eggs did not hatch? Hatched weak and died shortly after?

all of those.
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Re: Economics of a Sulfur Denitrator?

Postby William » Fri Sep 02, 2011 9:30 am

Thanks for the clarification
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Re: Economics of a Sulfur Denitrator?

Postby Suzy » Fri Sep 02, 2011 9:30 am

Following this with great interest. I have been an algae lover for years, using it for function and display. I have found it is wonderful at removing nitrates and nitrogen products. So much, in fact, that I have to add nitrate.

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Re: Economics of a Sulfur Denitrator?

Postby fishyfred » Mon Dec 19, 2011 7:08 pm

We live on a farm and pull a lot of our water out of a well on the property. Does the sulfur affect the growth of the fish? I'd never considered this until now...but I have noticed the wear and tear on the equipment. I can always use a to send the water from another source. Thanks!
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Re: Economics of a Sulfur Denitrator?

Postby Scottt » Tue Dec 20, 2011 11:35 pm

Interesting old thread.
The only addition I have to it is that I too used algal-scrubbers on my broostock system, and had the same results as Christian. Without running activated-carbon, I couldn't get clownfish eggs to hatch and survive at all.

The sulfur-denitrators sound too dangerous for me. I like the plant-idea, but for a large grow out, one would need lots of light.
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