Originally Posted by huma-huma
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.