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Originally Posted by emc7
If you can't smell or taste anything and the pH of the water doesn't change overnight, then it is safe for fish. If it holds water for a day, odds are it will hold for years (watch carefully for leaks in the first week, though). You were right to reseal it. An empty tank thats been in a garage for years is far more likely to fail catastrophically than a tank that has continuously held water. Be sure to level the stand and consider putting a piece of styrofoam under the tank. Most every spilt seam I've heard of either had the wrong sealant or was on a tank badly out of level.
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The Styro under the tank is an EXCELLENT precaution if things (bottom of tank or top of stand) is even a little uneven. Silicone cures faster in humid conditions, don't know how the chemical reaction works but humidity in the air speeds curing. The smell is acetic acid (which is what distilled vinegar is). Not toxic the way organic solvents are. Filling it for leak testing before the smell is 100% gone should be no big deal. Only thing I can add is to really take a good look at the center brace on the top trim. Make sure it is not beginning to crack before you do a final filler-up in the permannent spot. How much glass can bow out with that center brace gone is scary. GE Silicone is good stuff.