The algae reaction has many options and no single one is best
What’s best is envisioning an action before it’s required, and algae coming up is the real test for your investment. These rocks will either stay this clean, manually guided into compliance, or they won’t, based on the type of algae control you use. Find algae cure threads, pages long ones and see what patterns emerge in what works
You have one month lol clock is ticking ha but really it’s a nice clean sharp looking reef. The reason for fish isn’t due to bacteria limitation, it’s because the second you add a fish from the pet store to your tank, you are opting out of certain disease prevention protocols without considering the reasons opposite methods, delay methods that specifically add another month and a half before fish, exist.
Before adding fish we always recommend reading in the fish forum here on r2r the stickied links at the top regarding tank transfer, quarantine and fallow periods. This is minimum required reading before using fish in any marine tank, so very different from freshwater fish care yep, I found out in time.
After knowing the 76 day fallow method in and out from the fish disease forum here, then if you opt out and take another method that’s ok. But to forego even knowing the option (adding a fish before a certain 76 day time frame violates the method, there is a specific wait time after your tank cycles) means you have a 90% chance of losing all fish within the first six months. Clowns are a unique exception if that’s all you ever plan on keeping in the tank...no future plans for different types of fish. They’re pretty hardy alone but simply know the fallow tank protocol for fish care and decide.
Sorry it’s complicated but you’re getting reverse engineered info from a thousand lost reefs. They had no plan for algae, and or the plan didn’t change when the algae persisted, and they by and large opted out of quarantine/fallow options resulting in mass loss of fish.
Coral alone such as some mushroom corals and some zoanthids and some Xenia are no big deal or drain on your tank resources, and fish are. Even if you forego disease prevention, reef without fish a while for practice as the waste they bring will make your algae skyrocket. Be nimble with algae control before using fish, secret of the uninvaded.
As you take time studying before adding fish, you don’t have to reef with a barren scape. You can add a few easy corals after your large water change and take a week or two studying fish disease control this is perfect ordered timing for your system.
I’m against using fish too soon, but a cycle always follows a certain timelime depending on the type of rock used, your rocks and sand have nitrifying bacteria + a two week prep time- it’s ready.