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post #12 of (permalink) Old 12-28-2013, 05:00 AM
Algae Grower
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Join Date: Mar 2009
Location: Michigan, USA
Posts: 62

I worry about the chemicals in those products being fish safe. Here is a link to some black silicone aquarium adhesive. This one is only 3oz, but it can be had in a larger squeeze tube, and in a caulk tube. Source is Big Al's Online. Very few aquarium sources carry the black, or if they do, you must buy a box of 12 or 24 tubes.
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