I also bought a Griffin with the clear tank but have not tried it yet - I also bought an AGA and have been trying it out exclusively. Maybe I should check the new Griffin for leaks. I did get 2 extra clear tanks and found that they are a bit tight on my other Griffins - perhaps they will help.
On a side note, I made 3 tanks from a 12 mm Ideal syringe and they fit so tightly that I do not even need the o-rings! No leaks either and the tank has been on for about 2 weeks.
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