It's all good, it means your tank is cycling nicely. It took my 4 weeks to get to that point. Just keep on monitoring your ammonia, nitrite, and nitrate.
Once the algae eat up all the nitrate, you should see algae greatly reduce.
Funny thing is I just started cycling like a couple days ago . But I had a tank already and it had a crack and I had to start over . It's the same rock so that probably sped up the process huh?
I think its a 82g. Im not sure exactly what the future has in store for me but I'll definitely get a lot of Lps and hardy fish in the beginning. The tank already feels too crammed for bigger guys. I'm leaving the top sections open for Sps.