that may be just a molt
your cylcle can take anywhre from 2 weeks to 8 weeks depending on the grade of live rock
the cycle should look something like this
ammonia rise then drops to 0
nitrIte rise then drops to 0
nitrAte rise then will drop (probably not to 0) you want to aim for low readings 10 and under
continue to test when all readings read 0 consistantly you are cycled then you can look into a clean up crew snails crabs ect . Once added test again you will cycle again tho it should be very small .. once every thing reads 0 you can add your next resident , test again .....ect then you may see the start of your algaes diatoms , red slime , green algaes and coraline (good stuff coraline is ) you may see the development of it before the cycles are done , or even after I saw my first hint of diatoms after we were cycled.
when you start to see the diatoms keep the lights off and increase flow they are a natural part of a new tank and will go away in a few days to a couple of weeks if they really bug you you could siphion them off ,since there is nothing in the tank that needs lighting you could turn them on to peek and then off .. I never had anything other than the diatoms and of course the problem with red slime that is under control now :mrgreen: then you should start to see coraline algae growth hope this helps :mrgreen: