extended periods of stress result in accumulation and clogging of pores on live rock that do filtration and help with gas exchange, to clean is literally tank cpr its so neat.
thats actually the ideal prep as well...the clean condition is less o2 command during power outages, and its also easier after the stress event since less systemic bacteria are competing for resources. here is a giant page on making tanks 2 gals-200 gallons instantly clean without loss. what we do for home moves, tank upgrades, cyano cures, or just ran on a great working tank as age resetting/prevention is all the exact same move.
If you are reading this thread to cure a tank invasion from a link I sent you, we do not need to identify your type of invasion here we do not need you to test anything at anytime regarding nitrate, phosphate etc Above all, we do not need to see a microscope slide picture of your invasion at...
www.reef2reef.com
additional irony: taking your tank apart has no room for customization. repeat what works only from the work, thorough rinsing etc