40 g tank with koi / need help in regards with filter media - Aquarium Advice

melissa1977 · 09-21-2007, 11:58 AM

Hi guys,

My BF's mother has a 40 gallons tank. She keep a Koi in there, go figure...

Anyway, she just moved, and she asked me to help her to set it up correctly.

She just bought a Fluval 404 filter. I never use carbon in my own filter for my tank. I have no experience with coldwater fishes, and was wondering if I could set up the filter with no carbon as well....

theotheragentm · 09-21-2007, 02:27 PM

Carbon helps polish off the water, but it's not necessary. I'd toss it in there if there is space. After a month it won't be anything except a surface area for bacteria to grow on like anything else.

jsoong · 09-21-2007, 07:13 PM

Some sort of bio-media for the biobugs & filter floss is all you need. I use carbon as a cheap substitude for the ceremic bio-media. <Carbon apparently has a lot of surface area & is as good as the fancy stuff. Of course you don't change the carbon.>

newfound77951 · 09-25-2007, 10:47 AM

Whatever you do for filtration, with a koi in a 40 gallon just be sure to do a lot of water changes!

09-21-2007, 11:58 AM	#1
melissa1977 Aquarium Advice Activist Join Date: Jul 2004 Location: Montreal, Quebec, Canada Posts: 169 Images: 21	40 g tank with koi / need help in regards with filter media Hi guys, My BF's mother has a 40 gallons tank. She keep a Koi in there, go figure... Anyway, she just moved, and she asked me to help her to set it up correctly. She just bought a Fluval 404 filter. I never use carbon in my own filter for my tank. I have no experience with coldwater fishes, and was wondering if I could set up the filter with no carbon as well.... __________________ 105 G Geophagus (Eartheater) tank

09-21-2007, 02:27 PM	#2
theotheragentm Aquarium Advice Addict Join Date: Nov 2006 Posts: 2,172	Carbon helps polish off the water, but it's not necessary. I'd toss it in there if there is space. After a month it won't be anything except a surface area for bacteria to grow on like anything else. __________________ Box of Water - My Personal Musing and Photos on Fish Keeping

09-21-2007, 07:13 PM	#3
jsoong Aquarium Advice Addict Join Date: Aug 2003 Location: Edmonton, Canada Posts: 1,508	Some sort of bio-media for the biobugs & filter floss is all you need. I use carbon as a cheap substitude for the ceremic bio-media. <Carbon apparently has a lot of surface area & is as good as the fancy stuff. Of course you don't change the carbon.> __________________ 75 gal FW with 30 gal DIY wet/dry/sump. 9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, planted.

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09-25-2007, 10:47 AM	#4
newfound77951 Aquarium Advice Addict Community Mentor Join Date: Feb 2006 Location: Jamestown, RI Posts: 1,618	Whatever you do for filtration, with a koi in a 40 gallon just be sure to do a lot of water changes!