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Old 11-18-2013, 02:30 PM   #1
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Hand-tighten bulkheads only?

Never had a drilled tank before and getting ready to attach the bulkheads. Do I just hand-tighten, or should I use silicon or anything as well to seal it?
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Old 11-18-2013, 03:11 PM   #2
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Silicone.
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Old 11-18-2013, 04:42 PM   #3
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i personally wouldnt use silicone on bulkheads. sure it seals great and usually holds tight for a good while, but it can cause a huge pain if you ever need to remove those bulkheads for whatever reason. the bulkheads should of come with a rubber gasket that would go on the wet side to help seal it. i apply a thin layer of vasoline to the gasket before tightening. also you can use a wrench to tighten the bulkheads, just take extra care not to overtighten them.
jspeak- not trying to say that silicone is wrong in this instance, just think it causes a mess. IMO
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Old 11-18-2013, 05:11 PM   #4
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Quote:
Originally Posted by huma-huma View Post
i personally wouldnt use silicone on bulkheads. sure it seals great and usually holds tight for a good while, but it can cause a huge pain if you ever need to remove those bulkheads for whatever reason. the bulkheads should of come with a rubber gasket that would go on the wet side to help seal it. i apply a thin layer of vasoline to the gasket before tightening. also you can use a wrench to tighten the bulkheads, just take extra care not to overtighten them.
jspeak- not trying to say that silicone is wrong in this instance, just think it causes a mess. IMO
I've not yet made a reef tank, I've made plenty of water systems in a house, silicone was used in all cases. WC overflow, loft storage tank, plug holes, central heating, bath surrounds, sinks etc. Anywhere that needs to be watertight. I just applied the same principle. Fibre washers often fail at great cost to the home owner.

P.s. I'm a belt and braces kind of guy

I would fit a straight connector outside the box with compression fittings, these can have a stop end installed to close off pipe as required.
This would also allow it to be de-mountable.

That's my reason. I mean no offence.
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Old 11-19-2013, 01:08 AM   #5
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Thank you for the advice. I will have to take it apart eventually, so I'll try no silicone first. If it leaks, silicone it is.
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Old 11-19-2013, 01:21 AM   #6
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IMO hand tighten plus a quarter turn. Goof luck!
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Old 11-25-2013, 06:04 PM   #7
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Well hand tightening isn't working so far. Leaking like a sieve out of both holes. Letting the rest of the water leak out then trying again. Hope they were just crooked. I'll try again, then get some silicone if it won't hold.
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Old 11-25-2013, 06:40 PM   #8
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dumb question but are you sure you have the rubber gasket on the inside of the tank?
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Old 11-25-2013, 07:42 PM   #9
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It is. I don't think I tightened it enough so going to let it dry a bit and try again. Thanks for the heads up.
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Old 11-25-2013, 08:22 PM   #10
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Keep at it, you'll get it. I just had to remove the entire plumbing in one of my overflows due to two chromis that found there way in there. lol It leaked and leaked, actually had to try again the next day but we got it tight enough. As tight as you can get it by hand and then like said above maybe another half or quarter turn.
Good luck!
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