Welcome to TRT

sounds like you are off to a good start, and in your
diatom bloom, that will pass, you will prolly start seeing some green
algae blooms next. If you do a couple good sized water changes you might get the nitrate levels down. Nip that in the bud now, when the green algae kicks in it will feed off the nitrate and phosphate available in the system , left over from the rock cure process
I would wait a few more months to really give the tank a chance to settle down. Its hard to wait but it pays off in the long run.
Another thing to avoid is the temptation to add a fish or two just to keep things interesting. Fish means feeding and fish poop, which will drive the nitrate and phosphate levels which in turn will feed the algae blooms

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