01-05-2010, 09:41 AM
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I looked at every hardware store around here and every brand of silicone said in the fine print something like: Not for continuous underwater use, not for use in aquariums, not for use around live animals, or some other direction to indicate it was not to be used for this application. So, I think you will waste a lot of time trying to find a suitable silicone at a hardware store. If I need aquarium silicone anytime in the future I will just go directly to the LFS and buy it and be done with it. That's just me though. I don't like "shopping" or wasting time.