Re-sealing an old tank - what's the process?

I guess you just have to pay attention to the label. The GE I that is sold in the South East is only 'Window & Door' (without fungicide). The GE II is 'Kitchen & Bath'.
 
GE Silicone I for windows and doors. Used it on several tanks with great results.
 
Hardware stores around me often carry GE aquarium sealant. It comes in a little squeeze tube probably half or less the size of the normal gun tube size and it is often $7 or $8. What a rip! Just wanted to warn about that. I have used the ge I silicone many times with with great success. Don't waste money on the "aquarium safe" stuff.
 
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