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Discussion Starter #1
This is a custom prefilter that I am making for my 18 gallon tank. Going to go to TAP plastics and have them make it for me this weekend. Thought I would share the drawings in case someone else was looking for something similar.

 

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Seems to me you posted this quite some time ago. Did you ever get it built?

I have never understood the design or why you would want one like the diagram.

Bob :?
 

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If I am correct, this is for an in the tank application and will have a tube inside the prefilter that siphons into the main filter. The reason this is such a good idea is it skims off the surface water which contains the majority of impurities in the water. It is also a good idea for an intake for a canister filter since it wont allow the tank to completely drain in case of a seal or something going out on the cannister. Nice work and thanks for the info on the hood as well.
 

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Yeah, its just like a pre-filter that comes with a wet/dry filter just that it is much smaller. Another benefit to the above is that it keeps the water level up high. Its for smaller tanks,
 

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Thank for your design...

now my thinking is that if you curve corner the front panel...that you would need slightly longer front panel right? say if you wanted it 2 x 4 x 2..... then you might need it a lil longer than 8 inches? is that correct or 8 is fine?

also, how do you mark and know exactly where to make the bend to be accurate enough so that the edges of the front panel are flush after you are done...
 

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Discussion Starter #6
That makes sense. I figured I would leave it the the guys at TAP plastic to figure out all the details. I still haven't gone to get a quote or do the project.
 
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