Tropical Fish Keeping - Aquarium fish care and resources

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Follow It Home 08-23-2007 08:50 AM

I have been meaning to ask this question for a while, but have been forgetting. I want a planted tank, so should I take the carbon out of my filter?

leifthebunny 08-23-2007 10:10 AM

You don't have to, but it will inhibit the growth of the plants. Carbon strips out some of the necessary elements that plants need like iron.

dasmall1 08-23-2007 08:59 PM

If you plan on having any plants other than the simple slow growers you will need to remove it. Chemical filtration is not necessary in a planted tank anyway because the plants will take care of that. As already said, carbon will remove nutrients from the tank.

Elahrairah 08-23-2007 10:22 PM

As odd as it sounds, you may want to consider adding carbon to help the plants grow. People use CO2 injections, liquid carbon additives, etc....just not the carbon in a filter...

Like Dr. Nick says "Inflamable means Flamable?, What a country!"

jones57742 08-24-2007 03:49 AM


IMHO activated carbon (which is chemical filtration) should not be introduced into a filtration process except under anomalous conditions which occur very, very infrequently whether the tank is or is not planted.

Activated carbon filtration is not appropriate for a planted tank as the various elements and compounds which constitute liquid fertilizers will be substantially removed by this chemical filtration.
Plant nutrients and required catalystic trace elements which may become available in the tank water for "whatever reason" will also be removed by the activated carbon filtration.


Picklee 08-26-2007 02:06 AM

You can use zeolite ammonia absorbing crystals. They work the same way as activated carbon, but they do not remove meds or liquid ferts. I hear they also make a good bio-bed.

jkastner19 08-26-2007 05:12 PM

Will a new eheim cannister filter straight out of the box have a carbon filter in it? I should probably remove it from mine if it does?

jones57742 08-26-2007 05:46 PM

Mine did but do not have a clue as to yours

It should be very easy to determine.


jkastner19 08-26-2007 06:15 PM

Yeah it did. Sorry for such a silly question, I think I am in the overwhelmed mode where I think I have to ask about every little thing rather than just use logic or read the side of a box.

I removed my carbon filter, hopefully that helps with some of my browning problems that I put in my other thread...

Sorry for derailing this thread.. :)

jones57742 08-27-2007 03:11 AM


Please ask all the questions on this Forum which you feel you need answered.

I (and I believe that the remainder of the Forum members) would rather respond now rather than two months from now in the Emergency topic.


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