Thank you tons for posting am so happy to see that nice tank!
@Alexreefer he was able to win over a nearly exact challenge with a powerful initial rip clean and follow up guiding, and then he did run the hands interval where competition balanced things out, just like you said
I think plan looks good, and to save work I would not put sand back until system complies. You can sterilize the sand then, so it doesn't reinfect and then put back later. Where possible this is neat bc it allows total access during your battle action time after initial mass cut
The rocks are fine without the sand to carry on filtration. That's one initial brainstorm going off pics
Another: lift out rocks and scrape off algae. Put peroxide only on that former anchor spot and leave two mins then rinse off. This isn't harming the overall diversity battling Dino's it's just algae specific guiding
Then afte rocks are clean, even with sand still a little challenged, install a $150 pond UV sterilizer off
Amazon and cheat burn it a couple months, with hand guiding. Never letting them amass and then you can take it offline to check for sustain. I recommend tinkering with through export work before the sustained dirty phase. We can fallback on that for sure but there's also fun in seeing if the tank responders quicker, ideally, to rip cleaning and planned kill
That's a $ method though so it's not always practical but wow on the percent chance you don't have to rip clean, UV is powerful when oversized. It would mount in an annoying way bc it's the gear deciding fate of tank for this round...when it's removed and your system sustains using the discovered combo then the tank will look awesome. Doesn't have to mount pretty to be used...water in water out can help stop that invasion
The lysmata in there is sensitive to any form of peroxide contact, work carefully there in planning.