10-01-2010, 09:14 AM
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All of these are viable ideas, you just need to be careful about the edges. best way to smooth out glass edges is with fine set n dry sandpaper. You will get slight frosting but after you wash it, the edges should be less rough and the frosting will be barely noticeable. For the drilling, it will take a lot more elbow grease to get the edges clean, will depend on the size of the hole. Make sure to use fine sandpaper, course sandpaper will make rough edges which will still not be safe for fish.
Another option is to buy silicon and just coat the edges and make it a soft gel cushion, but that looks much less attractive imo.
For your last idea if you break the bottom, you will have a LOT of jagged edges. If you are looking for a clean break, freeze the bottle and get metal wire. Heat up the wire and take the bottle out of the freezer, quickly wrap the hot wire around the area you want cut to get a clean break.
Lastly, the wine label and glue need to be cleaned off. The paper will rot over time and the glue and ink will probably leak unhealthy things into your tank.