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SaltSpraySandwich

Filterless freshwater aquarium. Will it work?

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Hi, I'm in the process of planning a new tank for my male Red Devil. The tank will be a 5x2x2 or larger. I'm thinking of using the tanks substrate (sand) for passive nitrification and also using a small pump for waterflow. I know that alot of salt water tanks only use passive filtration, but im not sure if it would work for freshwater. Is this a bad Idea, what are your thoughts?

thanks

Gavin

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Personally if it was a planted tank with very few fish not a problem but being a red devil tank and the waste output of these fish not worth the risk you would have to have good filtration in there to keep him alive. Just my thoughts.

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Not a good idea the amount of wate a red devil produces is huge so you need loads of good bacteria to break it down. Without a filter you will end up having waste floating around your tank as there is nothing to pick it up.

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If you go undergravle add an inch layer of gravel over it then place mosquito mesh over this then another inch layer of gravel over that , that way the rd can only dig as far as the mozzie mesh and leave the filter intact.

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