Fluval C3 -- Replace Carbon Bag With Something Better?

LadyGrey

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just as the title indicates, I'm wondering if I should replace the carbon in my filter with a different kind of media. I'd like to have some extra cycled filter media around for when I want to cycle new tanks. Suggestions?
 

86 ssinit

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Yes remove it and replace with matrix or crushed lava rock. Put either of those into a media bag and add to filter. Both will give bacteria places to grow.
 

imba

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More bio media is always good.
You can also just add some good ol sponge. It will add to both bio and mechanical filters
 

Nierums

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I don't know if you're still looking for recommendations, but I have the fluval C4, and replaced my carbon with one pound of . I've been pleased with it so far. My tank was cycling so it helped with that, but it's supposed to be really good in general as well. The C3 may not hold a full pound but that shouldn't matter.
 

Islandvic

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Not sure how big the slot is for your carbon, but these are slI'm and cost $2.00 each online.


A couple of these might work well.
 
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LadyGrey

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Islandvic said:
Not sure how big the slot is for your carbon, but these are slI'm and cost $2.00 each online.


A couple of these might work well.
thanks! that looks great
 

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