Welcome to RC, dbp!
Have you checked a good hardware store? They sell 'aquarium safe' silicone at mine. 100% silicone is safe. Let it cure 24-48 hours and you're ready to leak test. Good luck with the project!
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As many naturalists and environmentalists have suggested, we should set aside our arrogance,
our desire to conquer and control everything, and walk hand in hand with Mother Nature. -Walter Adey
Current Tank Info: 180g Seagrass Sandbar Lagoon, START DATE November 28, 2018
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