DIY clear "catfish tube"?? - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 06-25-2011, 03:43 AM Thread Starter
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DIY clear "catfish tube"??

Anyone ever built a DIY catfish (or ghost knife) tube?


I'm thinking of taking a 2" diameter, 5" long section of PVC pipe, cutting it in half (making two 5" long half-round pieces).

Drill a few tiny vent holes for water flow, spray paint it dark brown (gravel color), and then glue on the side a scrap of acrylic using PVC glue.


Put this in the gravel, with only the opening at the top. Put the acrylic against the tank glass.

Then, when a fish goes in it, you can see him. Sure, he can see you, but they probably would get used to it.

Thoughts?
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post #2 of 5 (permalink) Old 06-28-2011, 06:10 AM
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I was gonna put a clear plastic tube that was used for a UGF under the gravel in the front of the tank next to the glass so I could see when fish were hiding in it, but the gravel just kept falling into the openings and blocking it, so I'm gonna find a new way. I would be careful about spray paint. You could just use epoxy to stick actual gravel inside the PVC to give it some texture and then you'd know it's safe. I like the idea anyhow. Post some pics up if you decide to go for it.
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post #3 of 5 (permalink) Old 06-28-2011, 11:36 AM Thread Starter
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Spray paint has been used for years in saltwater tanks- esp. black.
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post #4 of 5 (permalink) Old 06-28-2011, 03:35 PM
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I have found that Krylon Fusion black will eventually flake off of PVC tubes. This has happened both when I take pains to clean the tube, and when I only wipe down the tube. It seems to take about 1-2 years. I don't believe it is harmful, but it does expose the glaring white tube.

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post #5 of 5 (permalink) Old 06-28-2011, 04:17 PM Thread Starter
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Etch the PVC with some 150 grit sandpaper, or etch it thoroughly with acetone, that should help tremendously.
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