Did you remove the clouding waste from the sandbed, got a tank pic we can see real quick
Having no clouding waste anywhere in the tank will supersede those prior options for effectiveness, and that action helps you against future invasions not related to chemi clean. Since sb cleaning is the hardest work option it’s done the least, which is why cyano and similar invasions are often recurring even after an initial kill
Cyano get in the tank regardless of quarantine, so a chemi clean treatment kills the first round, but the cloudy feed remains for r2
Of all the invasions a tank can catch in reefing, 98% are required vectored imports (meaning we cause them by purposefully bringing them in on unquarantined hard scape material and your tank nutrients never were the cause) but this doesn’t apply to cyano and spirulina associates, they’re under most of our fingernails as we speak unless we are ocd 10x day hand and nail scrubbers. Cyano routinely exchanges between the world and our tanks, every day, anywhere there is moist dirt we have some requisite monerans
This is why I love the sand rinse thread so much, 12 pages never having to ID anything, nor ask for nutrient measures. We just clean tanks for the willing and post em fixed up
Try to find any pico reef on any forum that has a cyano or diatom or dino invasion and post back, they’re darn hard to locate for a reason even though there are thousands of pico reefs. pico reefing itself was built on no cloud setups and forced tank compliance so it doesn’t matter which board you scope, theyre pretty much all being ran the same because the technique on how to run them gets around just like the installation/salinity controls...But if we want to find a large regular sandbed tank with such an invasion, that’s daily on every forum, due to water only actions and massive cloud storage within the tank, every single time