Frogger
If you'll consider blast cleaning your sandbed vs treating the cyano via water actions, our sand rinse thread shows us beating cyano 100% on all pages
This is an example of a sandbed that is immune to diatom, dino, and cyano invasion since there's no waste. If having a diverse sandbed is important, then the way to attain it isn't in the invaded condition it's adding refugium refreshment kits to a clean condition sandbed and -starting- with diversity in a cloudless bed. It's not about adding diversity or meds to a clouded sandbed, which always regenerates a new invasion set after another one wanes.
Just wanted to offer that physical action to the bed, like spirit walker did on the rocks n setup. All forms of deep tank access cleaning can be done such that they're safe, and the invader is blasted not coaxed out.
SW
One thing I'm really interested in knowing within your experiment is how well heat/boil water does about transmitting down the plant shaft into its holdfast base to kill that which we couldn't scrape out. Your rate of growback follow up will remark upon that, can't wait to see how it unfolds in time. That heat may well be penetrating the top areas+ conducted by the plant themselves which is like peroxide in that it's a -kill- not just a physical remover.
All methods that remove gha and bryopsis from rocks with a brush only are lawn mowing, not true plant kills. same for clean up crews, hares do work for us but they're never dislodging the anchors. They chew, eat, leave the regrowth portion in place, then contribute bioload to the tank to feed regrowth. Not that cuc are wrong, this is how nature keeps a reef clean, but we get to make comparisons across threads which use varying actions for algae control. We like to have controlled, very controlled regrowth (nobody wants a sterile reef) so that diversity flourishes inside and wet can keep animals we like to watch fill their niches.
When recovering from a large scale invasion, animals alone aren't enough and that physical kill or chemical kill interval is needed to reclaim the potential back from the rocks, we'd rather coralline be the covering agent and we have to help real estate become that often. Peroxide is wonderful about traveling through, burning most of the plant as it sits there soaking. But it has minor microbial impacts people want to avoid, you and i chatted about how 3% is kinda weak sauce and 35% is the man party but it's too dangerous to be stored around children... If boiling water travels through the plant and kills down to the holdfast just the same then many people will prefer it's risk period during application, all of a couple minutes max, zero residual. It's real potential, you certainly got creative. In all these years I've been making tank rescue threads nobody ever thought of that one lol.
I agree that parameter balancing and adjusting can/might starve off plants and even kill them from within the rock, no discounting that. To me, that is used for the reclaimed tank, in the clean condition, it's been fun so far analyzing ways you've used to cause the clean condition without delay
