Does anyone know where I can get any of these?
They're supposed to be 'In-Line Air Control Valves.' I'm making a sponge filter and I need to lessen its output so that there's less agitation on the water surface, but the only things that I've been able to find are the T-shaped two way connectors, and I'm assuming they're not the same thing... If they are, someone tell me >.> Otherwise I've only been able to find it on one site and I don't want to pay over $5 for shipping if it's only supposed to be around $1.79, ya know?