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PostPosted: Nov 18th, '07, 19:47 
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so.....if next year i want to put an ibc with trout in my garage for the soul purpose of growing trout and because the garage will be kept dark and cool....it would be benficial to add an RSG filter to my biofilter?

is the RSG filter size relevant to the biofilter and the amount of water it will be processing?

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PostPosted: Nov 18th, '07, 20:11 
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hey just had a brain wave.............i remember seeing a biofilter that used bio balls of sulpher to grow (aerobic i think) de-nitrifying bacteria for nitrate removal.................. might be worth a scout on the web

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PostPosted: Nov 18th, '07, 20:12 
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BK - you have the RSG seperate to the biofilter and just have a small amount of flow going throught the RSG to maintain anaerobic conditions. I'd be inclined to run multiple RSG's if nitrate is a problem - with small flow going through each. I tested my system today for nitrate - and although it is not low by any means, I feel the RSG is helping to keep it managable. I may add another 1 or 2 RSG filters, same design as my 1st, just for the sake of proving whether it is working.


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PostPosted: Nov 18th, '07, 20:13 
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the rsg's go into the gb dont they?

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PostPosted: Nov 18th, '07, 20:17 
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http://www.aquariumproducts.com.au/nitrate_filters.php

10lph = 160mL per minute, so probably anerobic or anoxic at the least:)

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PostPosted: Nov 18th, '07, 20:25 
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Quote:
the rsg's go into the gb dont they?


That's how we have them BK - but they don't have to be like that. They could be stand alone or in your biofilter (if the BF was an open top one that you could get too easilly). I'm sure you could do something with one of those hydro trays of yours.


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PostPosted: Nov 18th, '07, 20:26 
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BK, We've been constructing the RSGs in the growbeds because it is convenient, but there's no rule that says it has to be there.

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PostPosted: Nov 18th, '07, 20:28 
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yep........was going to try that as i wont be using the gb method of filtering because i want to keep the garage dark inside to keep the temp down for the trout

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PostPosted: Nov 18th, '07, 20:30 
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BK - only difference between a GB and a BF is the plants. Other than my beer fermenter BF - all my in shed biofilters are just a open top container full of media - just like a GB but without plants.


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PostPosted: Nov 18th, '07, 20:30 
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anyone keen on trying the sulpher method? BK?

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PostPosted: Nov 18th, '07, 20:31 
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PS - I don't think the container of gravel that Les has his RSG in has any plants.


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PostPosted: Nov 18th, '07, 20:34 
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veggie boy wrote:
BK - you have the RSG seperate to the biofilter .



tis my fault.... i knew this but the above (as above) threw me and im fcuked at explianing shite lol

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PostPosted: Nov 18th, '07, 20:36 
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steve wrote:
anyone keen on trying the sulpher method? BK?



yeah bro.....was just surfin homade jobbies on the net, still tryn to find one i would wanna make

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PostPosted: Nov 18th, '07, 20:36 
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Tis all good man - twas me who explained that badly really. Just meant that the RSG is a seperate containment to encourage anaerobic conditions - while the main part of the GB or biofilter is aerobic :-)


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PostPosted: Nov 18th, '07, 20:38 
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i think i have a 5 kg bag of sulpher stashed at some ones house.....................and another bag of charcoal somewhere else...........................could never find the potassium nitrate as a kid..............:shock:

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