Doug_E Posted August 17, 2021 Share Posted August 17, 2021 I am setting up a nano shrimp tank and have a mix of 10mm and 13mm filter components. I was all set to get some brass 1/2" to 3/8" PEX adapters when the copper issue crossed my mind. The brass fittings might be fine, but for how long? I'd also be concerned unless it has been categorically proven that quality brass fittings like those used for plumbing will be find for shrimp and other copper sensitive species. I then started looking for good plastic (aquarium safe) barb fittings that go from 1/2" to 3/8". Nope, I can't find anything good. Just cheap junk on Amazon. Is it a fools errand to try this? Either because the parts don't exist or its is a bad idea to use 13mm inflow/outflow with a 10mm filter fitting. I'm using a ZooMed Nano 10 with 13mm LIly Pipe and a 13mm inline CO2 diffuser. Link to comment Share on other sites More sharing options...
lefty o Posted August 17, 2021 Share Posted August 17, 2021 probably have to search long and hard at auto parts to find a barbed 1/2-3/8 fitting. i would definately stay away from copper fittings in the aquarium/filter. Link to comment Share on other sites More sharing options...
Doug_E Posted August 17, 2021 Author Share Posted August 17, 2021 On 8/16/2021 at 10:27 PM, lefty o said: i would definately stay away from copper fittings in the aquarium/filter. They are "lead free dezincification resistant (DZR) brass" so not copper but can theoretically leach copper and lead into the water. Probably fine, but I'd sleep better with plastic fittings. Link to comment Share on other sites More sharing options...
Doug_E Posted August 17, 2021 Author Share Posted August 17, 2021 @lefty o good tip on the auto parts. I found a nylon and aluminum option. So getting there... Link to comment Share on other sites More sharing options...
lefty o Posted August 17, 2021 Share Posted August 17, 2021 On 8/16/2021 at 9:37 PM, Doug_E said: @lefty o good tip on the auto parts. I found a nylon and aluminum option. So getting there... nylon would be a good choice. Link to comment Share on other sites More sharing options...
Doug_E Posted August 17, 2021 Author Share Posted August 17, 2021 On 8/16/2021 at 10:39 PM, lefty o said: nylon would be a good choice. I'm reading how aluminum is bad for aquariums. My local O'Reilly auto has the nylon in stock too. I never would have thought this would be so hard to find! Link to comment Share on other sites More sharing options...
lefty o Posted August 17, 2021 Share Posted August 17, 2021 yup, sometimes these things lead you to look outside the box to find the answer. Link to comment Share on other sites More sharing options...
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