How much Bio filtration to put in my cannister - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 04-03-2010, 10:39 AM Thread Starter
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How much Bio filtration to put in my cannister

I have been researching old posts on what to put as media in my cannister - I'm replacing all media for my new setup. It'll be a 100 gallon low tech planted tank. The cannister has 3 trays. I'll have a prefilter sponge on the intake, and the top tray will be filter floss. The second and third trays are up for debate. Some of the old posts said it's not that necessary to have a lot of bio media in planted tanks, other opinions said you can never have too much. So. What would you recommend? A second tray of mech filtration - more floss or sponge of some type, with the ceramic noodles in the bottom, or should I fill the 2 lower trays with ceramic noodles or some other type of bio media? I'd appreciate some input. Thankyou!

P.S Is it worth replacing the ceramic noodles with bioballs, or are they both just as good as each other? I hear mixed reports on bioballs.
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post #2 of 5 (permalink) Old 04-03-2010, 12:32 PM
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Once a tank that size is established the filtration system is pretty much just moving water around and most of the 'filtration' will take place in the tank from the plants and substrate.

I really wouldn't worry to much about what you put in the filter. If you have mulm from an established tank put that under your substrate and use seeded biomedia if available for the filter. Once the tank gets established I would lean more toward mechanical filtration in the filter itself.

If you want to make things easier on yourself in terms of algae control, add carbon and/or organic removal product (i.e. purigen). The key is to keep organic content too a minimum when establishing the tank.
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post #3 of 5 (permalink) Old 04-03-2010, 12:45 PM
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I agree with many ... that one can never have too much bio-filtration. I have never used those noodle things or those bio-balls before so I cannot speak for or against them. I guess in that depaartment it is a matter of personal choice.

The sponge you speak of on the intake is the first stage mechanical filtration. Leaving much, if not all, of the mulm in the tank. Leaving the Mulm in the tank is OK with a planted tank it becomes food for the plants, Just keep up with water changes and don't vacuum the gravel too much if at all. Anything after that would be merely bio-filtration and water polishing.

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post #4 of 5 (permalink) Old 04-03-2010, 03:01 PM
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My XP3s have 3 media baskets, and this is the way I always media mine up (top to bottom):

Micron pad
Purigen
Floss (I recently bought a big roll of bonded pond filter media that I'm cutting to size- works great and super cheap!)
------
Fine sponges
Eheim ehfiflav biomedia
------
Coarse sponges
Eheim Ehfimech ceramic rings





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post #5 of 5 (permalink) Old 04-06-2010, 01:34 AM Thread Starter
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Thanks for the replies everyone. I took the filter apart yesterday. A lot of the ceramic noodles/rings in the bottom basket were crumbling, so I ended up throwing most of it away. I will have to get some more.
I'm going with (in order from top to bottom)
First tray: fine sponge/ filter wool/purigen/medium sponge
Second tray: bioballs/coarse sponge
Bottom tray: ceramics/coarse sponge.

I completely bleached everything as I cleaned in out, then ran the whole filter in a bucket of bleach solution for an hour. I will be rinsing it thoroughly today then taking it apart to air dry in the sun. I'm looking forward to a clean start in the new tank.
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