@mcarroll and
@brandon429, thanks for your input.
Tank temp stays between 76.9-78.0 F
I think my tank may be a good candidate for the algaefix. I am NOT nor have I ever been a fan of using chemicals to solve a problem in reef aquarium, but I'm boxed in a corner with no real biological options. I can't out compete it, starve it (short of turning off the lights for 6-12months and then starting over I also have no place to relocate my corals/livestock for an extended stay, that can be fixed but takes time). The total teardown rock dipping is likely to work, but for longevity I doubt I will get it all and it will be back if I don't get it all.
The algaefix is attractive, it looks like the problem most reported in reviews is people's fish die from an ammonia spike related to the breakdown of the algae. My tank isn't "overrun" with bryopsis. There's a couple larger concentrated patches, (with small isolated creeping pockets throughout the system) but the whole system isn't completely covered. Bryopsis is my only problem algae, vibrant took care of everything else that was in my system (I had a grab bag of spirulina, cyano, chrysophytes, etc. It's all gone now). Just the bryopsis is left. So I think a large ammonia spike is unlikely in my case, I am also running a zeolite reactor which is excellent at absorbing ammonia in the water column. (I could also swap out the media before and after treatment). So I think that it's unlikely that I would lose any fish to any ammonia being present.
I also don't run macros at this time ( I want to in the future though). So ultimately what I am left with is how long/what are the after effects of using Algaefix? How long is it active in the system? What's the collateral damage? (My CUC?). Am I going to be frantically changing 150 gallons of water after treatment? All questions I would like to have some expectations to potential answers.
Brandon429, while I like the idea of using the 35% H2O2 (I dilute my own for Oxydators) as a cleaner for the rock, that stuff is a little too potent for my tastes to trust myself to use it straight, and 150# of rock is gonna make a BIG mess (especially with me handling it.). It only takes a drop of that stuff on some wood or flamable material that gets left or forgotten and sometime down the road it will likely cause combustion of the material. For anyone reading this NOT familiar with 35% food grade Hydrogen peroxide, do your homework!!! It has inherent risks and dangers to you and your surroundings! You could REALLY hurt yourself or others if you don't know how to properly handle it.
That being said I agree that your tactic would likely work very well, especially in a smaller more controllable environment, without a madman (me) behind the controls. (I'm too messy, all my skin would be snow white and oxidized and then the house would burn down, and I would probably still have this bryopsis because I missed a spot



)