Water Chemistry

Well after 4-5 weeks my cycle is complete

The two table shrimp are pretty much gone, ammonia is 0, nitrite is 0, and nitrates are between 0 and 5 ppm.. Temp is 77-78 degrees, salinity is right on the mark. Calcium seemed high at like 480-500 but it was my first test and not sure if i did it right.

Did a 5 gallon water change today.

But im concerned as I havent seen any algae or diatom blooms.....i have read many start up threads with these and im wondering ...