John Guest female adapters -reef safe?

tenpercenter

Premium Member
http://flexpvc.com/cart/agora.cgi?product=JG-Fittings-FemaleAdapters

I'm looking at the above as a way to go from 1/2" ID clear tubing to poly tubing using a hose barb that screws into the fitting linked above. Basically I'm trying to go from a small mj pump to poly tubing for an ato system.

The pictures appear to have a gold ring of some sort as part of the fitting. Has anyone used theses? Think they are safe for a reef tank (copper?)

Totally open to other options to go from 1/2" id tubing to 1/4" poly if anyone has any.

Thanks!!!
 
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