06-02-2013, 02:41 PM
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That's the same design as the Hydro, I have one of these in my QT. I would perhaps reduce the air flow a bit, you can get a valve set for this. If this is your only tank, it is good to have a 2-valve unit, but if you have or may have additional airstone/filters, get a 3 or 4 valve or whatever. One valve goes to the existing tank, and the other is a :"bleeder." A short piece of tubing with an old airstone on the end. Adjust the tank valve to where you want the flow, and the additional air from the pump goes through the bleeder line. Air pumps should always run full, so this allows that while reducing the tank flow.