What seal for plastic? - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 12-17-2008, 06:56 AM Thread Starter
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What seal for plastic?

I am planning to make a simple transparent DIY CO2 inline reactor with a couple of ordinary gravel vacuums. The large ones have a 2"x10" tube and the idea is to buy two of them, and then take the end off one and apply it to the bottom of another.

So, I am considering what a really good seal would be for this kind of plastic. I don't suppose silicone is the best solution here. But will PVC cement do? Or should I look into some other kind of seal?

Thanks,
Anupam


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post #2 of 7 (permalink) Old 12-17-2008, 07:56 AM
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you cant find another source for clear tubing?

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post #3 of 7 (permalink) Old 12-17-2008, 09:26 AM
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Originally Posted by youareafever View Post
you cant find another source for clear tubing?

whats everyone else use? I have not seen anything as far as tubing in clear.

I did pick up some t12 plastic light covers to make intank reactors with. but that is more flimsy then his gravel cleaner suction device.
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post #4 of 7 (permalink) Old 12-17-2008, 09:54 AM
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Clear PVC is the ideal material, as you can simply use ordinary PVC cement to join it to the other parts of the reactor. There's some for sale by the foot in the S&S actually: https://www.plantedtank.net/forums/sw...c-reactor.html.

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post #5 of 7 (permalink) Old 12-17-2008, 03:08 PM
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Another good reason to use something compatable with PVC cement is that you know for sure PVC cement is non-toxic since it is used for drinking water pipes. Other sealants and adhesives may be iffy.
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post #6 of 7 (permalink) Old 12-17-2008, 04:03 PM
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It is entertaining to have a transparent CO2 reactor, but it doesn't work any better. And, eventually the transparency is lost as biofilm builds up on the inside of the tubing. That makes ordinary white PVC pipe look awfully good for building these. All of the parts are then very cheap and easy to buy.

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post #7 of 7 (permalink) Old 12-22-2008, 02:29 AM
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they make claear tubing from acrylic. theres a plastic store here in la called hastings plastics that sells it. also acrylic solvent is non toxic solvent that can be used to cement it together. if you use acrylic...have it cut to size and sand the ends with #180 sandpaper on a flat surface. that will give you a water tight seal if you use solvent.
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