I saw the title and I was about to say the same thing, but Nigel beat me to it. Yeah they are the same thing, snake oils (my opinion).
Some people swear by various trace element supplements, and they may work for them, or it may just be coincidence that they are doing everything else right, and their tank is doing well in spite of adding the snake oil, impossible to know really. Myself I have to be able to read the label and have its contents, and concentrations make sense. I also usually won't add anything that I cannot test for to determine that it is being consumed so I can determine at which rate it should be added.
It always makes me laugh out loud when I read the stuff on the side of the labels of any Mark Weiss product. Black powder, etc. etc. Don't get me wrong, there are likely some additives that could be added to a tank that might help corals (aspartic acid as Randy H-F has mentioned), and some of the additives might contain them, but how are you ever going to know? and who has tested these products in a meaningful way? No one.
Here's the text from one of them (there are some better ones, but I think they might have removed some of the best ones from the labels because some scientists died laughing in the aisle of the pet stores [wife's sued]), it does just about everything you could ask for:
Marc Weiss Reef Vital DNA #122
Enhanced Reef Life Energizer. With continued use, colorful Coralline algae grown can 'choke out' and overtake hair, green, brown, blue and red algaes such as slime and bubble algaes. Increases dosage to cycle new aquariums, acclimate new fishes, corals and marine life, and enhance their reproduction.
*Enhances growth and provides pigmentation priming of coralline algaes, anemones, sea mushrooms, sponges, tunicates, feather dusters, live rock and related organisms.
*Interferes with the ability of Cryptocaryon (Ich) to adhere to fishes skin
*Corals "open up"
*Live rock organisms proliferate with increased color
*Adhesion to substrate is accelerated
*Reduces nuisance algaes
*Breaks down organic wastes, ammonia, nitrates, nitrites and phosphates
*Promotes coral polyp regeneration and reproduction
*Aids damaged corals
*Creates an ongoing biological cycle