Thanks, yer that's the big debate and research for me over the last week or so, which one goes in first, fish or CUC?
Basically I had watched the BRS/WWC Hybrid method series and its proposed 4 month cycle, which I liked but could work out the logic behind putting in the CUC at 1 month (completion of cycle), then fish at 2.5 months, then corals at 4 months (once coraline starts to appear).
After a bit more research into the method and sequence logic, I discovered that the reason for the CUC first is to continue progression of the tank stabilization and maturity without dramatic increase of bio load through fish introduction. This also minimises the potential of the ugly phase and algae outbreaks. It also allows natural seeding of coraline that comes into the tank on CUC shells. Thus coraline should start to grow by month 4 naturally without any additives ready for coral additions.
When the algae starts, the CUC will already be in place to eat it. Meanwhile feed the CUC nori and occasionally some pellets.
Another advantage is that the fish go into a more stable and mature tank, increasing their immortality.
Any views on this are very welcome as it's not too late to change the sequence.