HOB Filter - The Planted Tank Forum
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post #1 of 4 (permalink) Old 08-05-2014, 03:27 PM Thread Starter
Algae Grower
Join Date: Dec 2013
Location: Scotland
Posts: 19
HOB Filter

Got an old HOB filter that I'm thinking about using on my new planted tank as it'll be better hidden than having an internal filter in the tank. Problem is, I don't have any of the filter cartridges for it and don't fancy buying them and replacing them constantly. Would I get away with just cutting some sponge to size and adding it to the compartment along with some bio media?
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post #2 of 4 (permalink) Old 08-05-2014, 03:30 PM
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Join Date: May 2012
Location: Kalamazoo, MI
Posts: 121
Yep. I do this with the Aqueon HOB's that are made for cartridges.
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post #3 of 4 (permalink) Old 08-05-2014, 03:38 PM
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Location: Seattle, WA
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Hi Jhncf,

I run just 'sponge' in all of my HOB filters. Actually what you want is open cell reticulated (filter) foam typically in the 20 ppi to 30 ppi range depending upon how 'fine' a filter you want.

45 Gallon Tall; 96 Watt AH Supply CF; 6700K; & 30 Gallon Long; 2X36 Watt AH Supply CF; Press. CO2; UGF; Heat Treated Montmorillonite Clay
Greater Seattle Aquarium Society (GSAS)

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post #4 of 4 (permalink) Old 08-05-2014, 07:37 PM
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Location: Santa Barbara
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What brand is the filter?
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