Protecting fish fry from external filter - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 13 Old 04-24-2014, 10:14 AM Thread Starter
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Protecting fish fry from external filter

Hi

I have a fluval 406 external filter. The intake attachment is shown in the picture below. It has gaps big enough to suck up the fish fry. For now, I have used a fish net and wrapped that around the intake using a rubber band. The problem I am having is that the fish net is not letting through anything and this is collecting a lot of rubbish around the net. Eventually the net will be full with rubbish and will not let any water pass.

Edit: I forgot to mention that the fries are from mollies and platies.


I am looking for alternative solutions to the net. Any suggestions?


Last edited by jamal6008; 04-24-2014 at 10:31 AM.
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post #2 of 13 Old 04-24-2014, 10:57 AM Thread Starter
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What about stainless steel mesh? Would that help or have same issues as the net? See attached pic below.

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post #3 of 13 Old 04-24-2014, 01:39 PM
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use a sponge?

I don't have this problem. I just don't use a filter.

my .02

maintain Fw and marine system with a strong emphasis on balanced, stabilized system that as much as possible are self substaning.

have maintained FW systems for up to 9 years with descendants from original fish and marine aquariums for up to 8 years.

With no water changes, untreated tap water, inexpensive lighting by first starting the tank with live plants (FW) or macro algae( marine)

see: http://www.tropicalfishkeeping.com/a...-build-295530/
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post #4 of 13 Old 04-24-2014, 01:42 PM Thread Starter
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lol I can't imagine a sponge will be any better. It will probably reduce the flow even more. I need to have a filter for 230 litres tank
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post #5 of 13 Old 04-24-2014, 02:22 PM
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My current tank is only 208 litres (55g US).

I just use the plants to filter the water with no added mechanical filter.

But that's just me and my .02

maintain Fw and marine system with a strong emphasis on balanced, stabilized system that as much as possible are self substaning.

have maintained FW systems for up to 9 years with descendants from original fish and marine aquariums for up to 8 years.

With no water changes, untreated tap water, inexpensive lighting by first starting the tank with live plants (FW) or macro algae( marine)

see: http://www.tropicalfishkeeping.com/a...-build-295530/
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post #6 of 13 Old 04-24-2014, 02:23 PM
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Anything with a fine enough mesh to stop fry getting through will always collect solids and be prone to clogging. To reduce the chances you need to increase the size of the surface area that the water is drawn through. You could get a larger intake strainer and wrap the net around this or could construct a frame to fit onto the intake tube and wrap it in the net. This should increase the time period that is necessary for cleaning the net . If you managed to create a large enough surface area it may be possible to remove the need for cleaning it at all. It is possible to get strainers made from the mesh in various sizes which fit straight onto the intake tube.
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post #7 of 13 Old 04-24-2014, 02:24 PM
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One thing you can do is to increase the surface area of the intake through some kind of adapter.

maintain Fw and marine system with a strong emphasis on balanced, stabilized system that as much as possible are self substaning.

have maintained FW systems for up to 9 years with descendants from original fish and marine aquariums for up to 8 years.

With no water changes, untreated tap water, inexpensive lighting by first starting the tank with live plants (FW) or macro algae( marine)

see: http://www.tropicalfishkeeping.com/a...-build-295530/
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post #8 of 13 Old 04-24-2014, 02:35 PM Thread Starter
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How about using the Fluval FX5 intake strainer? It seems to have much bigger surface area. I am not sure if it has the same size tube as my 406 though. Pic attached below:

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post #9 of 13 Old 04-24-2014, 03:23 PM
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If you absolutely must gotta use a filter I would put the intake behind some kind of partition. Even a pvc pipe.

Then the screen on that partition would cover a huge area and could be easily removed for cleaning every so often. While still allowimg water to go through but not the fish.


just a suggestion.

Worth at most .02

maintain Fw and marine system with a strong emphasis on balanced, stabilized system that as much as possible are self substaning.

have maintained FW systems for up to 9 years with descendants from original fish and marine aquariums for up to 8 years.

With no water changes, untreated tap water, inexpensive lighting by first starting the tank with live plants (FW) or macro algae( marine)

see: http://www.tropicalfishkeeping.com/a...-build-295530/
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post #10 of 13 Old 04-24-2014, 04:02 PM Thread Starter
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Thanks for the suggestions guys. For now I have decided to give this a try. I hope it works better than fish net mesh and is easier to clean.

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