Well you are close, but I think you need to start saying you have been wrong 2 and Half times.
The ViVi Novas will not be glass, we simply do not have the time to make threaded glass. But they will not be the plastic tanks either, or not completely. They will be metal sleeves that go over the plastic. We will be supplying both the sleeves in various designs and the plastic tank that goes underneath the sleeve.
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We will only have the 3.5's to start, but are hoping to get the 2.5's as well. I have been told by my supplier these will work with all the different versions and possibly even the knock off's. But in order to make sure it works with past version you have to have the plastic tube that comes with it which is why we are supplying that with every order.
Bummer, I love glass tanks. I understand completely though on threading the glass.