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Old 05-10-2015, 08:48 AM   #11
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I don't use carbon either. Perhaps if something was to go wrong that created a need for carbon, I'd use it, but certainly not hanging in a bag in the sump. Carbon needs to be in a reactor to be efficient. It's not going to do a whole lot of good with no water being forced through it.
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Old 05-10-2015, 12:44 PM   #12
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it really does come down to what you are stocking and how heavy of a bio-load you are carrying.


Carbon should only be used in a canister type filter or some means where it is stationary but water can flow through it.
Carbon should NEVER be used in a media reactor as the action of the carbon moving around will cause it to break up and bits will make their way into the display.
Micro particles of carbon are one suspected cause of HLLE.


Purigen, bio-pellets, and phosphate removers work in reactors because they do not degrade and break up.
GFO (granulated ferrous oxide) is used in reactors, but the flow is very slow so the granules do not mash around and break up.
A inexpensive canister filter pulling/returning from the sump will suffice to use any type of chemical media.
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Old 05-11-2015, 09:11 AM   #13
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What would the "general" stocking be for an 80G? Just so I know when I'm getting to the limit to possibly consider extra filtration


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Old 05-11-2015, 08:06 PM   #14
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Quote:
Originally Posted by PB_Smith View Post
Carbon should only be used in a canister type filter or some means where it is stationary but water can flow through it.
Carbon should NEVER be used in a media reactor as the action of the carbon moving around will cause it to break up and bits will make their way into the display.
Micro particles of carbon are one suspected cause of HLLE.
So, then if the flow was slow through the media reactor and the particles weren't' moving (media reactor/canister filter, potato/potato) it would work just fine for carbon.
Suspected cause of HLLE? That's no more proven than stray current or malnutrition (which of course can arrest HLLE).
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Old 05-12-2015, 03:04 AM   #15
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I have been using filter socks but recently got rid of the socks. I have noticed a little spike in Nitrate level and have been testing with sugar dosing. This is working really well and less work.



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Old 05-12-2015, 10:50 AM   #16
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So, then if the flow was slow through the media reactor and the particles weren't' moving (media reactor/canister filter, potato/potato) it would work just fine for carbon.
Suspected cause of HLLE? That's no more proven than stray current or malnutrition (which of course can arrest HLLE).
but then you do not get the benefit of the media churning around, knocking off dead bacteria and exposing more media surface area, but yeah it would work similar to GFO in a reactor.


carbon dust and HLLE...
yeah, that's why I said a "suspected" cause, same as the ones you mentioned.
If it were proven I would not have used the word suspected.
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Old 05-12-2015, 02:36 PM   #17
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So what is the ideal stocking for an 80? So I know what to aim for when getting more filtration?


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Old 05-12-2015, 05:30 PM   #18
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Hey PB Smith,

No I am not using any mechanical filtering. Have rocks and matrix as filter media.


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Old 05-12-2015, 05:40 PM   #19
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Hey PB Smith,

No I am not using any mechanical filtering. Have rocks and matrix as filter media.


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Uhhmmm, OK, and your point being......


what size tank and what is the bio-load?
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Old 05-12-2015, 05:52 PM   #20
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400litre tank with skimmer capacity of 900litre.
Bio load - 1 each - yellow tang, blue tang, mimic tank, large clown. Flame Angel, rock Cod, honeycomb eel.
3 Damsels, 2 Chromis.
3 medium hammer corals, 2 medium torches, 2 medium frog spons.
Around 20 mushrooms and Duncans.

Have no issues without using mechanical filtering, 1 teaspoon sugar ever 2nd day is my trick.
Have been doing this for nearly a year now!


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