Ah I remember reading that before! Thank you! I forgot that the loctite will end up looking just like the corner edges of the aquarium! Thanks!!! I've also read the sand sprinkling technique to dull the shininess. I believe I'll use the 2-part epoxy on a test piece with some sand on it and let it sit for a few weeks as you suggested. Thank you for all your help! I'll post pictures of the waterfall when it is done!