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28-02-2014, 05:34 PM | #51 | |
Dragon
Join Date: Sep 2003
Posts: 2,995
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Quote:
see the pipe beside with a white silicon patch? that is where the wire come out, and seal with silicone... Last edited by nutx; 28-02-2014 at 05:35 PM. |
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28-02-2014, 05:45 PM | #52 |
Prof SK Ong
Join Date: Jan 2009
Posts: 10,641
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I won't do that.
It will give resistance to flow. Heng suay venturi effect just after the uv tube and you get vortices that can create shear stress on any joints downstream.
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28-02-2014, 05:56 PM | #53 |
Dragon
Join Date: Sep 2003
Posts: 2,995
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no resistence....The UV sit on top of the tank horizontal section of the tank, till higher at one side, and flow down...
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02-03-2014, 12:19 PM | #54 |
Dragon
Join Date: Sep 2003
Posts: 2,995
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UV installed!
from 20cm pipe to 50cm pipe. This will avoid the venturi effect mentioned by Ong. There is a slight slope down to assist in the flowing back to tank. This show the DIY portion to drill a hole for the wire and silicon for water proof. A "mistake" is use the white silicon which I've no idea whether the light is on or working fine! Maybe using the transparent one will be able to see some light shadow...I'm not sure....anyway....I'll assume it is running as long as I dun see green water or hairy algae! |
02-03-2014, 01:32 PM | #55 |
Dragon
Join Date: Mar 2008
Posts: 2,813
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Wahhhh... Very pro and well-thought through DIY!
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02-03-2014, 10:41 PM | #56 |
Dragon
Join Date: Sep 2003
Posts: 2,995
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02-03-2014, 11:01 PM | #57 |
Prof SK Ong
Join Date: Jan 2009
Posts: 10,641
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Can tan red aro with this type of tube?
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03-03-2014, 12:29 AM | #58 |
Dragon
Join Date: Jun 2008
Posts: 1,430
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Nice & neat DIY.
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03-03-2014, 09:39 AM | #59 |
Dragon
Join Date: Sep 2003
Posts: 2,995
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05-03-2014, 01:40 AM | #60 |
Dragon
Join Date: Jun 2008
Posts: 1,430
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take note the silicon might not hold at cable entry.
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