I don’t think you understand how diffusion works. Unless you’re doing an acclimation over several days, it’s literally pointless. Even over 12 hours a coral is not going to completely diffuse all of the water in its tissue to reach an equilibrium with the water it’s being put into. It takes a day or two for a coral to completely diffuse all of the water in its tissue to reach equilibrium with the surrounding water, doing an hour or two drip acclimation, with a retracted coral that is not actively respirating isn’t helping it to acclimate, it is just prolonging the time that it’s unable to respirate and acclimate itself. A two hour acclimation is not a ‘slow transition’, it’s just two more hours the coral can’t respirate. This idea that ‘if we’re not drip acclimating corals then there’s no logic in making changes slowly’ is again completely missing the point. A coral is going to go through stress in being transported and changing environments, and it takes up to a couple days for a coral to fully acclimate and reach equilibrium with the new tank water, doing a two hour drip acclimation does not lessen that change or make it easier for the coral to adapt to it, it may actually make the acclimation more stressful. The only way a drip acclimation would be helpful is if you did it very slowly over the course of 2-3 days, and even that wouldn’t be stress free.
I mean, you can drip acclimate if you want to, in most cases it’s probably not going to do any long term damage, but there is no biological reason to do it, it doesn’t serve any purpose. It’s something that you should do for fish and inverts (especially clams) or anything that uses hemoglobin or similar to respirate. Fish do not depend on diffusion to respirate, so changes in salinity can be deadly (osmosis can cause hypo or hypernatremia, depending on whether the water is more or less salty). Again, acclimate your corals however you want, but all drip acclimation does is make you feel better, it does nothing beneficial for your corals.
And with that, I’m not going to divert any more attention away from this thread, I just wanted to give some helpful advice, not debate or defend settled science.