I soak my flex tube in very hot water to soften it, then it is very easy to slip it over the barbs.
Having a hose hooked just to the 2nd ring is a bit dicey .... you can have a lot of water on your floor if the connection falls apart.
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80 gal FW with 30 gal DIY wet/dry/sump.
9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, small school of white cloud minnows, planted.
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