thank you for sharing this video, I agree it is great way of mounting corals, my idea is that i have 3/8" pvc couplings epoxied on the rock and i did as many as i could, i bought regular size couplings and 2" size couplings, price was great .29 cents each and i bought 2 boxes each (50/box). I have used white cement to cover the pvc couplings or at least i did best i could, I have clear 3/8" schedule pvc pipes that i will use to mount corals and coral discs or plugs will be epoxied on the clear tube and then slide it down the coupling, pvc pipes are 12" in length and i can control the height of the frag ( too much light or low light) and i will be able to move them around as well. I got this ideal from Top Shelf Aquatic they used this method in their 1200 gallon grow out tank.