glass diffuser

Just wanted to let anyone know who might be thinking about purchasing a cheap made-in-China glass CO2 diffuser on ebay to save your money. I put this on in my nano tank and connected it to my DIY setup. The diffused bubble flow was very weak and my CO2 drop tester changed to a deep blue-green...

Hello, I have been in the aquarium hobby for at least 15 years and am just now trying an inline glass diffuser. I set up a new 33 gallon rimless tank with an Eheim Ecco Pro filter, UV sterilizer, soon to get an inline heater once Hydor gets their crap together. Anyone know when they are going...