thank you so much for posting a true customized challenge! the part and parcel moves are easy, this one has zest because you have legit earned a benthic community.
our main tenet is that most reefs can transfer without killing everything, but a loss rate of even 1 tank per 5 pages is unacceptable. relocating stinky detritus has this degree of slight risk so on page one I linked a worst-case outcome to eliminate the outliers that would be heart breaking were we to take a chance on moving mass tanks and
always valuing the bugs over the greater stability
that being said, an active tank like yours hasn't sat and stratified with zones of rot locked in and pocketed. its been turned over by hand or micro beast

and you can see most of our tank pre-shots are mainly mud and nothing that wiggles. the occasional worm track
sadly, we have been decimating that zone in order to always preserve hundreds or thousands in coral
but in your tank Id concentrate on clean rock transfers, moving no detritus with rocks by good saltwater pre rinsing and twisting swishing in clean water to cast off adherents before the move. clean rocks will run your new setup nicely
regarding the sand that's in tank, mostly drained water, your fish already out and what corals you can get out separated and then the rock also separately clean and ready to transfer, maybe you can net out a bunch of bugs and move them over the sifting buckets/brainstorm with me/not sure
surely some bugs can be caught this way, xferred safely into new sand rinsed to the degree you accept a loss variable if its not blasted clean.
you could add netted bugs and worms back to blast cleaned new tank sand, best of both worlds. some bugs will seed down off the live rock, holed up inside during the xfer and swish-cleaning
and in a year bam you're back to ideal balance
hows that for a beginning plan thank you much for posting
Side note: Dom posted a two year update post sandbed removal due to persistent cyano
I'm dealing with a 33 long, so I think if I ordered that many, my tank would look infested. I like to get crabs and snails from the shoreline down by my house. I usually keep them stocked up in a 10 gallon and replenish as needed. It's a cheap way to keep a CUC and quarantine them before adding...
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