I have a DUETTO ATO and the tubing for it is 6.5mm ID and 9mm OD. I can’t find this size tubing in orange anywhere. Anybody have a link to some online? Thanks in advance.
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Found this one, but I think it’s a little more rigid than I’d like. Looking for something more similar to silicone.Have you checked saltwater aquarium.com or bulk reef supply? They both have a lot of that stuff.