the tank is setup for about 1 1/2 months and tds meter read 0.01. all my test is stable the last time i check. how long is the cycle usually? said:If the ammonia and nitrites are reading 0.0 or no trace and the nitrates are less <5 the cycle is complete. There one more thing to consider however and that is it takes a new reef tank up to 6 to 9 months to reach full maturity.
What type of filtering are you using? A sump with Protein Skimmer, Macro algae etc. Also do you have Live Rock in your tank?
The key when setting up a new tank is patience, it takes time.